Galaxy Buds2

Released August 2021.4 Last checked 23 October 2026.

Form factor: In-ear
ANC: Yes
Battery life: 7.5h
With case: 29h

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All specs

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General

Series: Galaxy Buds2
Model numbers: SM-R177NZKAEUA, SM-R1772
GTIN / EAN: Not available
Announced: 11 August 20213
Status: Not available
Predecessor: Samsung Galaxy Buds+14 15
Successor: Samsung Galaxy Buds3 16
Launch price (US): $149.994
Launch price (EU): Not available
Markets: GB2
Colours: Graphite, White, Olive, Lavender, Onyx2
Segment: Music2

Design

Form factor: In-ear2
Bud shape: Stemless2
Use one bud alone: Either bud5
RGB lighting: Not available

Drivers and sound

Drivers per bud: Type Role Count per earbud
Dynamic Woofer 1
Dynamic Tweeter 1
Source2 3 11
Driver type: Not available
Driver size: Not available
Drivers per bud: 2
Diaphragm material: Not available
Frequency response: Not available
Impedance: Not available
Sensitivity: Not available
Sensitivity reference: Not available
Max sample rate: Not available
Max bit depth: Not available
Adaptive EQ: Not available
Personalised sound: Not available
Onboard EQ: Not available
Custom EQ bands: Not available
EQ presets: Normal, Bass boost, Soft, Dynamic, Clear, Treble boost12
Volume limit: Not available

Type	Role	Count per earbud
Dynamic	Woofer	1
Dynamic	Tweeter	1

Spatial audio

Spatial audio: Samsung 360 Audio with Dolby Head Tracking2 6
Head tracking: Yes2 6

Noise cancelling

Active noise cancelling: Yes1
ANC type: Hybrid11
ANC microphones in both earbuds: 411
Adaptive ANC: Not available
ANC levels: Not available
ANC attenuation (claimed): Not available
Transparency mode: Yes1
Adjustable transparency: Yes5
Automatic ANC and transparency blend: Not available
Conversation detection: Not available
Wind noise reduction: Yes2

Measured

Frequency response notes (measured): Measured response has elevated sub-bass relative to the reviewer target. Bass can mask some midrange detail.12 13
Bass amount (measured): Not available
Treble amount (measured): Not available
Deviation from target (measured): Not available
Consistency between fittings (measured): Not available
Harmonic distortion (measured): Not available
Sound leakage (measured): Not available
Noise isolation (measured): Not available
Noise isolation, best (measured): Not available
Passive isolation (measured): Not available
Call quality notes (measured): Published ideal, office and windy microphone demos. Review reports keyboard noise pickup and weak wind handling.12
Mic low-frequency extension (measured): Not available
Mic high-frequency extension (measured): Not available
Mic speech-to-noise ratio (measured): Not available
Latency (measured): Not available
Bluetooth latency, worst (measured): Not available
2.4 GHz latency, worst (measured): Not available
Latency in game mode (measured): Not available
Battery life (measured): Not available
Longest tested use per charge: Not available
Battery life with case (measured): Not available
Full charge time (measured): Not available
Weight per bud (measured): Not available

Microphones and calls

Voice microphones in both earbuds: Not available
All microphones in both earbuds: 61
Bone conduction voice sensor: Yes11
Mic noise reduction: AI2
Call audio bandwidth: Not available
Mic mute control: Not available
Sidetone: Not available

Connectivity

Chip: BES2500ZP11
Connections: Bluetooth5
Bluetooth: 5.21
Bluetooth codecs: SBC, AAC, Samsung Scalable Codec3
Bluetooth profiles: A2DP, AVRCP, HFP1
LE Audio: Not available
Auracast: Not available
Multipoint: No7
Multipoint devices: Not available
Multipoint with LDAC: Not available
Paired devices remembered: Not available
Automatic switching between own devices: Yes2 5
Fast pairing: Not available
Audio sharing: Not available
Wireless range (claimed): Not available
Wireless receiver: Not available
Receiver connector: Not available
Simultaneous 2.4 GHz and Bluetooth audio: Not available

Latency

Low latency mode: Yes5 7
Claimed latency: Not available
Lowest claimed latency: Not available

Compatibility

Platforms: Android, iOS, Windows, Other7
Connection per platform: Platform Connection Microphone works
Android Bluetooth Yes
iOS Bluetooth Yes
Windows Bluetooth Not available
Other Bluetooth Not available
Source7
Features that need a specific device: Feature Needs
Galaxy Wearable app Android 7.0 or later and at least 1.5 GB RAM for original Buds2 app support. No iOS companion app support.
Samsung connection popup Samsung Android 8.0 or later with SmartThings. This is not proof of Google Fast Pair or Microsoft Swift Pair.
Auto Switch Galaxy phones or tablets with One UI 3.1 or later and same Samsung Account. Supported Galaxy Watch4 or later route. App and device support varies.
360 Audio and head tracking Current earbud firmware and Samsung Galaxy phone or tablet with One UI 3.1 or later. App and content support varies. Added after launch.
Gaming mode Galaxy Wearable Labs and compatible Samsung Android host. No numeric latency promise.
Galaxy AI translation Paired compatible Samsung Galaxy phone processes Live Translate or Interpreter. Maker names S24 family as of February 2024. Account, software, language and network conditions apply.
Source2 5 6
Official licence: Not available

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes
Windows	Bluetooth	Not available
Other	Bluetooth	Not available

Feature	Needs
Galaxy Wearable app	Android 7.0 or later and at least 1.5 GB RAM for original Buds2 app support. No iOS companion app support.
Samsung connection popup	Samsung Android 8.0 or later with SmartThings. This is not proof of Google Fast Pair or Microsoft Swift Pair.
Auto Switch	Galaxy phones or tablets with One UI 3.1 or later and same Samsung Account. Supported Galaxy Watch4 or later route. App and device support varies.
360 Audio and head tracking	Current earbud firmware and Samsung Galaxy phone or tablet with One UI 3.1 or later. App and content support varies. Added after launch.
Gaming mode	Galaxy Wearable Labs and compatible Samsung Android host. No numeric latency promise.
Galaxy AI translation	Paired compatible Samsung Galaxy phone processes Live Translate or Interpreter. Maker names S24 family as of February 2024. Account, software, language and network conditions apply.

Battery and charging

Battery per bud: 61mAh1 3
User-replaceable earbud battery: Not available
Claimed battery life: Mode Includes case recharges Hours (h)
ANC on No 5
ANC on Yes 20
ANC off No 7.5
ANC off Yes 29
Call No 3.5
Call Yes 13
Call Yes 14
Source2 3
Longest claimed use per charge: 7.5h
Playback per charge with ANC (claimed): 5h
Playback per charge without ANC (claimed): 7.5h
Total with case (claimed): 29h
Total with case and ANC (claimed): 20h
Talk time (claimed): 3.5h
Full charge time, buds: Not available
Charging guidance: Not available
Quick charge time: 5min3
Earbud playback after quick charge: 1h3

Mode	Includes case recharges	Hours (h)
ANC on	No	5
ANC on	Yes	20
ANC off	No	7.5
ANC off	Yes	29
Call	No	3.5
Call	Yes	13
Call	Yes	14

Charging case

Case battery: 472mAh1 3 11
User-replaceable case battery: Not available
Case charging port: USB-C5
Case full charge time: Not available
Wireless charging: Yes5
Wireless standards: Qi3
Wireless charging power: Not available
Speaker in case: Not available
Screen on case: Not available
Case works as audio transmitter: Not available

Controls

Controls: Touch, Voice commands5
Earbud volume control: Touch5
Gestures: Single, double and triple tap, Touch and hold, Double tap earbud edge in Labs5 6
Remappable controls: Yes5
Voice assistant: Bixby5

Sensors and health

In-ear detection: Yes12
Sensors: Accelerometer, Gyroscope, Hall sensor, Proximity sensor, Touch sensor, Voice Pickup Unit1
Heart rate sensor: Not available
Skin temperature sensing: Not available
Hearing aid feature: Not available
Medical clearances: Not available
Hearing test: Not available
Hearing protection: Not available
Health features: Not available

Fit and durability

Ear tips included: S, M, L1
Ear tip materials: Silicone2
Stabilisers: Not available
Ear tip fit test: Yes2 5
Dust and water rating, buds: IPX212
Dust and water rating, case: Not available
Water resistance depth: Not available

Software

Companion app: Galaxy Wearable (Android) and Galaxy Buds (Windows)5 8
App platforms: Android, Windows5 7 8
User firmware updates: Yes5 6 8
Finding network: Samsung Find9
Precision finding: Not available
Live translation: Yes2

Dimensions and weight

Front and side, drawn to scale.

Weight per bud: 5g(0.2 oz)1
Bud dimensions: Width17Height20.9Depth21.1mm(0.7 × 0.8 × 0.8 in)1
Case weight: 41.2g(1.5 oz)1
Case dimensions: Width50Height27.8Depth50.2mm(2 × 1.1 × 2 in)1

Certifications

We could not find any of these 4 fields. Show them

Hi-Res Audio: Not available
Communication certifications: Not available
FCC IDs: Not available
Other certifications: Not available

In the box

In the box: Galaxy Buds2 earbuds, Charging case, Ear tips in S, M and L, Quick Start Guide, USB-C charging cable1
Cables included: Type Count
USB-C charging cable 1
Source5