Smartwatches / Compare
Garmin Forerunner 70 vs Polar Street X
Product A: Garmin
84 of 150 known
Change Garmin Forerunner 70
Product B: Polar
79 of 150 known
Change Polar Street X
63 of 141 fields differ
- 39 different values
- 24 known for one only
- 24 the same
- 54 missing for both
Biggest differences
Each bar uses the scale of all 101 smartwatches.
- Battery life with GPSA: 23hB: 42hPolar is 19 h higher.
- Battery lifeA: 312hB: 240hGarmin is 72 h higher.
Size, drawn to scale
Front and side.
- AGarmin: 42.6 × 42.6 mm
- BPolar: 45 × 45 mm
All 150 fields
Every value links to where we found it.


General
6 of 10 differ
Series
Model numbers
010-04307-00, AB52061Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026Selected US reference: Forerunner 70 Black, part 010-04307-00. The 170 and 170 Music are separate marketed models, excluded from this product.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026Final copyright page publishes M/N AB5206. Exact store part number comes from the US product page.
6J, 900116713, 900116714, 9001167151Maker product pagepolar.com/en/street-xRead 15 October 2026Store feed SKUs 900116713 (Night Black), 900116714 (Forest Green) and 900116715 (Snow White). The manual and the regulatory sheet give the model 6J.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Model 6J.
GTIN / EAN
725882070766, 725882070773, 7258820707801Maker product pagepolar.com/en/street-xRead 15 October 2026Store feed gtin12: 725882070766 Night Black, 725882070773 Forest Green and 725882070780 Snow White.
Announced
Status
Predecessor
Garmin Forerunner 555Reviewtechradar.com/health-fitness/garmin-forerunner-70-reviewRead 8 October 202613Maker product pagegarmin.com/nl-NL/blog/verschillen-forerunner-70-en-forerunner-55Read 23 October 2026Garmin's Dutch blog says the Forerunner 70 is the successor of the Forerunner 55.
Not available
Successor
Not available
Not available
Launch price (US)
Launch price (EU)
Markets
Colours
Night Black, Snow White, Forest Green1Maker product pagepolar.com/en/street-xRead 15 October 2026Colour options: Night Black, Snow White, Forest Green.
Segment
OS updates promised
Not available
Not available
Security updates until
Not available
Not available
Case
6 of 8 differ
Case size
Case shape
Case material
Fibre-reinforced polymer1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: case material and bezel material Bio-based plastic. The launch release says reinforced polymer body. The manual lists PA11+8GF (glass-fibre reinforced polyamide 11) among the device materials. Stored as fibre-reinforced polymer.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Device materials list PA11+8GF, a glass-fibre reinforced polyamide.
Case material (as published)
Polymer case with fibre-reinforced polymer bezel5Reviewtechradar.com/health-fitness/garmin-forerunner-70-reviewRead 8 October 2026Specifications and design sections identify the polymer case. Maker table and datasheet identify a fibre-reinforced polymer bezel. Body polymer reinforcement is not claimed.
Back
Not available
Not available
Case dimensions
Height42.6Width42.6Thickness11.9mm(1.7 × 1.7 × 0.5 in)1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026
Height45Width45Thickness13.8mm(1.8 × 1.8 × 0.5 in)1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: width 45 mm, height 45 mm, thickness 13.8 mm.
Weight (case only)
Not available
Weight with strap
Not available
Durability
3 of 8 differ
Water resistance
5ATM1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: water resistance WR50. The manual says 50 m, suitable for swimming.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Water resistance 50 m (suitable for swimming).
Water resistance standard
Not available
Dust and water rating
Not available
Not available
Dive rating
Not available
Not available
Max dive depth
Not available
Not available
MIL-STD-810
Not available
MIL-STD-810 tests
Not available
Not available
Operating temperature
Display
4 of 14 differ
Display type
Display type (as published)
Screen size
Resolution
Pixel density
Not available
Not available
Display area
Not available
Not available
Touchscreen
Max refresh rate
Not available
Not available
Min refresh rate
Not available
Not available
Peak brightness
Not available
Not available
Minimum brightness
Not available
Not available
Always-on display
Display cover
Display cover (as published)
Chemically strengthened glass1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026
Corning Gorilla Glass 3 (AF + DLC coating)1Maker product pagepolar.com/en/street-xRead 15 October 2026Manual tech spec: Corning Gorilla Glass 3 (AF + DLC coating).3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Watch materials: Corning Gorilla Glass 3 (AF + DLC coating), PA11+8GF, aluminum, stainless steel, PMMA. Wristband: silicone with an aluminum buckle.
Platform
5 of 15 differ
Platform
Not available
OS at launch
Not available
Not available
Software
Not available
Not available
Latest OS
Not available
Not available
Works with
Phone requirement
Not available
iOS 17 or later, or Android 8 or later with Bluetooth 4.0 capability, running the Polar Flow app15Maker product pagesupport.polar.com/ie-en/polar-flow-app-and-compatible-devicesRead 15 October 2026Street X: iOS mobile devices with iOS 17 or later. Android mobile devices with Bluetooth 4.0 capability and Android 8 or later.
App store
Not available
Voice assistants
Not available
Not available
Chipset
Not available
Not available
Process
Not available
Not available
CPU cores
Not available
Not available
CPU configuration
AGarmin Forerunner 70
Not availableBPolar Street X
| Max clock (GHz) |
|---|
| 0.275 |
Max CPU clock
Not available
0.275GHz
GPU
Not available
Not available
Low-power coprocessor
Not available
Not available
Memory
1 of 2 differ
RAM
Not available
Not available
Storage
Health sensors
3 of 8 differ
Heart rate sensor
Polar Precision Prime optical heart rate sensor (OHR GEN 3.5)1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: Precision Prime, OHR GEN 3.5.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Sensors: Precision Prime, Skin Temp GEN 1, OHR GEN 3.5.
ECG capability
Blood oxygen sensing
Skin temperature sensing
Blood pressure feature
Not available
Not available
Body composition sensor
Not available
Not available
Skin conductance (EDA)
Not available
Not available
Medical clearances
Not available
Not available
Motion and environment sensors
3 of 9 differ
Accelerometer
Accelerometer range
Not available
Not available
Gyroscope
Barometric altimeter
Compass
Ambient light sensor
Depth gauge
Not available
Not available
Depth gauge range
Not available
Not available
Water temperature sensor
Not available
Not available
Health and fitness
3 of 5 differ
Health features
Continuous heart rate, Heart rate alerts, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking, Readiness score, Cycle tracking1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026Published continuous heart rate, high/low heart rate alerts, Pulse Ox, HRV status, sleep stages, stress, training readiness and cycle tracking. Pulse Ox is not available in all countries. Cycle tracking uses Garmin Connect or an optional Connect IQ widget.
Continuous heart rate, Heart rate variability, Sleep tracking, Sleep stages1Maker product pagepolar.com/en/street-xRead 15 October 2026Features: continuous heart rate, nightly sleep stages (Sleep Plus Stages), Nightly Recharge, SleepWise. HRV is listed under heart rate. The Daily Readiness card and SleepWise give an alertness forecast, not a readiness score, so readiness_score is not stored. No stress score is listed. Not a medical device.4Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/introduction.htmRead 15 October 2026Introduction: Sleep Plus Stages, Nightly Recharge, SleepWise, continuous heart rate.
Fitness features
VO2 max, Training load, Recovery advice, Running dynamics, Running power, Pool swim, Strength rep counting, Interval workouts, Route navigation, Turn-by-turn navigation, Trackback1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026The table lists VO2 max, training load, recovery, running dynamics/power, pool swimming, rep counting, interval training and course guidance. Google Maps directions require a paired Android phone. Course tracks and breadcrumb navigation are distinct from stored map data.
VO2 max, Training load, Recovery advice, Running power, Pool swim, Open water swim, Interval workouts, Route navigation, Turn-by-turn navigation, Trackback, Climb detection1Maker product pagepolar.com/en/street-xRead 15 October 2026Features and cards: Running Performance Test (VO2max), Training Load Pro, Recovery Pro, wrist-based running power, swimming metrics, interval timers and phased training targets, route guidance, turn-by-turn route guidance, Track Back, Back to Start. Hill Splitter detects uphills and downhills automatically (manual). The manual has separate pool and open water swimming sections.4Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/introduction.htmRead 15 October 2026Introduction: Route Guidance, Komoot routes, Track back, Back to start, Running Performance Test with VO2max, Walking test, Training Load Pro, Recovery Pro, running power, swimming metrics with distance and strokes also in open water, Hill Splitter.9Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/swimming-metrics.htmRead 15 October 2026Separate sections for pool swimming (distance, pace, strokes, SWOLF) and open water swimming (distance, pace, stroke rate for freestyle and route).10Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/hill-splitter.htmRead 15 October 2026Hill Splitter automatically detects all uphills and downhills from GPS speed, distance and barometric altitude. It needs a 1 second GPS recording rate. Stored as climb detection.13Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/track-back-and-back-to-start.htmRead 15 October 2026Track back guides you back to the start via the same route you came. Back to start shows the direction by beeline.
Sport profiles
Not available
Not available
Dive modes
Not available
Not available
External sensors
Heart rate strap, Speed and cadence, Foot pod2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026Printed page 51: External HR, Foot Pod and Speed/Cadence sensors support ANT+ or Bluetooth. Lights, radar, Running Dynamics Pod and tempe have no dedicated schema options.
Heart rate strap, Power meter, Speed and cadence8Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/compatible-sensors.htmRead 15 October 2026Compatible Bluetooth sensors: Polar Verity Sense, OH1, H10 and H9 heart rate sensors, Polar speed sensor and cadence sensor, and third-party power sensors.
Safety
3 of 6 differ
Fall detection
Not available
Not available
Car crash detection
Not available
Not available
Emergency SOS
Yes1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026Safety and tracking section offers manual assistance to saved contacts, not direct emergency-service contact. A paired compatible phone with data coverage is required.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026Printed pages 70-71: assistance sends a message and LiveTrack location to saved contacts using the paired phone. Garmin Connect does not contact emergency services.
Not available
Emergency siren
Not available
Not available
Live location sharing
Yes1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026LiveTrack requires a paired compatible phone and Garmin Connect.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026
Not available
Dedicated LED flashlight
Yes1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: front LED light Yes. Built-in LED flashlight with red light mode.11Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/flashlight.htmRead 15 October 2026Integrated LED flashlight with adjustable white light and a red light mode.
Positioning
2 of 3 differ
Positioning
GPS, GLONASS, Galileo1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026
GPS, Galileo, BeiDou, QZSS1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs, Geo location: GPS, Galileo, BeiDou and QZSS Yes. GLONASS is not listed.18Maker product pagepolar.com/en/guide/polar-street-x-vs-polar-pacer-proRead 15 October 2026Comparison table: GPS constellations GPS, Galileo, BeiDou, QZSS for Street X. GLONASS is not named.
Dual-band GNSS
Not available
Offline maps
Connectivity
2 of 15 differ
Bluetooth
Bluetooth version
Not available
Not available
Wi-Fi
Wi-Fi standard
Not available
Not available
Wi-Fi bands
Not available
Not available
Cellular
Network
Not available
Not available
4G bands
Not available
Not available
5G bands
Not available
Not available
NFC
Contactless payments
Payment services
Not available
Not available
Ultra-wideband
Not available
Not available
Satellite
Not available
Audio
3 of 4 differ
Microphones
Not available
Calls on the watch
Not available
Music on the watch
No3Maker spec sheet (PDF)d.otto.de/files/bb8c9230-2144-56be-a7ee-3603b0bbddc2.pdfRead 8 October 2026Printed page 4: Garmin Music is absent for Forerunner 70. Music editions belong to other models.7Reviewthe5krunner.com/2026/08/28/garmin-forerunner-70-reviewRead 8 October 2026Smart features section explicitly states no music storage.
Controls
3 of 5 differ
Buttons
Named operating buttons
LIGHT, UP, DOWN, START/STOP, BACK/LAP2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026Printed pages 5-6 and the product diagram show LIGHT, UP, DOWN, START/STOP and BACK/LAP. No rotating crown or bezel is present.
Crown
Rotating bezel
Not available
Gestures
Cover screen with palm, Raise wrist to wake display2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026Printed page 6: cover the screen with a palm to return to the watch face and dim the screen. Display settings on page 50 include wrist movement.
Not available
Battery and charging
7 of 13 differ
Battery capacity
Not available
385mAh1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: battery capacity 385 mAh, Li-Pol.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026385 mAh Li-pol rechargeable battery, replaceable at Polar Central Service.
Claimed battery life
AGarmin Forerunner 70
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 312 |
| Always-on | No | 120 |
| Low power | No | 672 |
| GPS | No | 23 |
| GPS, all systems | No | 16 |
BPolar Street X
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 240 |
| GPS | No | 42 |
| Max battery GPS | No | 170 |
Source1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: performance training mode 42 h, eco training mode 170 h, smartwatch mode 10 d. The page text and the launch release say 43 h for the performance mode, which conflicts with the 42 h in the tech specs and the manual. The manual figure is stored.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Performance training mode up to 42 h (optical heart rate on, GPS recording every second). Eco training mode up to 170 h (GPS every 2 minutes, optical heart rate off). Smartwatch mode up to 10 days with continuous heart rate and phone notifications on. 10 days is 240 h.14Maker product pagesupport.polar.com/en/what-is-the-battery-life-of-street-xRead 15 October 2026Performance up to 42 h: optical heart rate on, GPS every 1 second, always-on display off. The scenario text says Dual-Frequency GPS ON, while the product page never claims dual-frequency GNSS and the5krunner says single-frequency, so the row is stored as plain GPS. Eco up to 170 h: optical heart rate off, single-frequency GPS every 2 minutes. Smartwatch up to 10 days with phone notifications on, always-on display off and Do Not Disturb 8 h at night. Stored eco row as the maximum-saving GPS mode, like the Vantage V3 file.
Smartwatch mode (claimed)
312h
240h
AOD battery life (up to)
120h
Not available
GPS mode (claimed)
23h
42h
Solar charging
Not available
Not available
Charging method
Charging guidance
Use the supplied proprietary charging cable with a USB-C computer port or USB-C power adapter rated for at least 5 W. The adapter rating does not establish power accepted by the watch.2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026Printed page 79: USB-C computer port or adapter with a minimum 5 W rating. No full-charge time or watch input power is established.
Charge with the included Polar Charge 2.0 cable, which snaps on magnetically. A USB power adapter is not included. Polar asks for an adapter marked output 5 Vdc that provides at least 500 mA and has an approval mark such as LPS, UL listed or CE. The watch can charge during training. An optional charge limit of 80% is in the battery settings.6Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/batteries.htmRead 15 October 2026Charging the battery: custom cable snaps in magnetically. A USB power adapter is not included. Adapter marked output 5 Vdc, at least 500 mA, LPS, UL listed or CE. Charging during training is possible. Charge limit 80% in Settings > General settings > Battery.
Max charging power (watch)
Not available
Not available
Fast charging
Not available
Not available
Quick charge claim
Not available
Not available
Charge 0 to 80% (claimed)
Not available
Not available
Full charge time (claimed)
Not available
Not available
Measured
2 of 4 differ
Peak brightness (measured)
Not available
Not available
Battery tests (measured)
BPolar Street X
Not availableFull charge time (measured)
Not available
Not available
Strap
4 of 6 differ
Lug width
Quick-release strap
Strap system
Industry-standard 20 mm quick-release straps1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026
Standard 22 mm spring bars with a quick-release knob. No adapters needed7Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/changeable-wristband.htmRead 15 October 2026Standard 22 mm spring bars. Any band that uses 22 mm spring bars fits.
Strap material
Strap
Black quick-release silicone band3Maker spec sheet (PDF)d.otto.de/files/bb8c9230-2144-56be-a7ee-3603b0bbddc2.pdfRead 8 October 2026
POLAR Street Wristband, 22mm1Maker product pagepolar.com/en/street-xRead 15 October 2026What's included: POLAR Street Wristband, 22mm.
Strap sizes
AGarmin Forerunner 70
| Size | Wrist (min) (mm) | Wrist (max) (mm) |
|---|---|---|
| Supplied silicone band | 126 | 203 |
BPolar Street X
Not availableRegulatory
1 of 3 differ
FCC ID
SAR limb (US)
Not available
Not available
SAR limb (EU)
Not available
Other certifications
Not available
Not available
In the box
1 of 2 differ
In the box
Forerunner 70, Charging cable, Documentation1Maker product pagegarmin.com/en-US/p/1941179/pn/010-04307-00Read 8 October 2026
POLAR Street X, POLAR Street Wristband, 22mm, Polar Charge 2.01Maker product pagepolar.com/en/street-xRead 15 October 2026What's included: POLAR Street X, POLAR Street Wristband 22 mm, Polar Charge 2.0.
Power adapter in box
Links
Not compared
Product page
Spec sheet
Manual
www8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdf2Owner's manualwww8.garmin.com/manuals/webhelp/GUID-E3AB50C9-691D-4482-8387-7EEB3961CA87/EN-US/Forerunner_70_OM_EN-US.pdfRead 8 October 2026Forerunner 70 GPS Running Smartwatch Owner's Manual, US English, revision 2, September 2026.
EPREL registration number
Not available
Not available
Warranty
1 of 1 differ
Manufacturer warranty (source market)
Both are also in the API. Back to all smartwatches.













