| Physical features | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Model | Watch | Galaxy Watch Active 2 (40mm SM-R835U) |
| Other model names | Realme Watch (RMA161) | Galaxy Watch Active2 4G LTE SM-R835U (Stainless Steel) |
| Country or region available | 
(Global, International) | 
USA |
| Brand | Realme | Samsung |
| Release date | June, 2020 | September, 2019 |
| Depth | 11.8 millimeters (0.46 inches) | 10.9 millimeters (0.43 inches) |
| Size (width x height) | 25.6 x 36.5 millimeters (1.01 x 1.44 in) | 40 x 40 millimeters (1.57 x 1.57 in) |
| Weight | 31 grams (1.09 ounces) | 37 grams (1.3 ounces) |
| Qwerty physical keyboard | Not supported | Not supported |
| Antenna | Not supported | Internal antenna |
| Build, materials | Plastic body, glass front | Stainless steel body, glass front |
| Protection against water and others | IP68 certified: dust proof and waterproof over 1.5 meter and 30min | 50 meters waterproof.
MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. |
| System (OS) | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Operating system | Proprietary OS | Tizen 4.0 |
| Firmware update | feature not registered | feature not registered |
| Hardware | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Chipset | 32bit | 64bit - Samsung Exynos 9 Dual 9110 (10nm) |
| CPU processor | Single-Core | 1.15Ghz Dual-Core ARM Cortex-A53 |
| GPU graphical controller | feature not registered | ARM Mali-T720 MP1 |
| RAM memory | feature not registered | 1.5GB LPDDR3 |
| Internal storage | Not supported | 4GB (1.39GB available)
eMMC |
| External storage | Not supported | Not supported |
| Display | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Display type | TFT IPS LCD | Super AMOLED |
| Screen size | 1.4" inches | 1.2" inches |
| Screen-to-body ratio | ~67.7% (screen-to-body ratio) | ~29% (screen-to-body ratio) |
| Display resolution | 320x320 pixels (1:1) | 360x360 pixels (1:1) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 323 PPI | 424 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass DX+ |
| Display features | 60Hz, 380 nits | Not supported |
| Mobile networks | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Dual-SIM | Not supported | Not supported |
| SIM card | Not supported | 1 slot (Single-SIM)
e-SIM (Eletronic) |
| Maximum download/upload | feature not registered | 150/50 Mbps |
| Network technology | feature not registered | 2G, 3G, 4G |
| Frequency, bands | Expand band detailsCollapse details |
| GSM Mhz band | Not supported | Quad-Band 850/900/1800/1900 |
| Primary 2G network | Not supported | GSM 850/900/1800/1900 |
| Primary 3G network | Not supported | UMTS 850/900/2100 |
| Primary 4G network | Not supported | LTE Cat4 (1, 3, 5, 7, 8, 20) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
| Calling | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Messaging | SMS, E-mail | SMS (T9), MMS, E-mail, Push mail |
| Speakerphone | Not supported | Supported |
| Video calling | Not supported | Not supported |
| Call control | Not supported | Voice dialing, Voice recorder, Voice commands |
| Camera | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Back camera (main camera) | Not supported | Not supported |
| Main camera resolution | Not supported | Not supported |
| Video recording (primary) | Not supported | Not supported |
| Flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Not supported | Not supported |
| Touch focus | Not supported | Not supported |
| Image stabilization | Not supported | Not supported |
| Zoom | Not supported | Not supported |
| Face/smile detection | Not supported | Not supported |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | Not supported |
| 2ª camera | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Front camera (secondary) | Not supported | Not supported |
| Front camera resolution | Not supported | Not supported |
| Video recording (secondary) | Not supported | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Multimedia | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP3 | MP4 |
| Audio formats | MP3, eAAC+ | MP3, WAV, WMA, OGG, eAAC+ |
| Connectivity | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| USB | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | Not supported | 802.11 b/g/n (2.4Ghz) |
| DLNA | Not supported | Not supported |
| NFC | Not supported | Supported |
| GPS | Not supported | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| Infrared port | Not supported | Not supported |
| Other functions | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Active noise cancellation | Not supported | Not supported |
| Vibrating alert | Supported | Supported |
| Ringtones | feature not registered | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | Not supported |
| Sensors | Accelerometer
Heart rate
SpO2
| Accelerometer
Ambient Light sensor
Barometer
Heart rate
Pedometer
VO2 max
|
| Other features | - Colors: Black
- Silicon straps colors: black, red, blue, green
- Straps compatible: 20mm
- Smart notifications
- Watch Faces
- 14 Sports Modes | - Colors: Black, Silver, Pink Gold
- Bands: 20mm
- Always-on display
- Samsung Pay |
| Power supply | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| Battery | LiPo: Li-Ion polymer (Non removable) | Li-Ion: Lithium-Ion (Non removable) |
| Battery capacity | 160 mAh | 247 mAh |
| Charger, watts | Standard charging
Magnetic charging (dock) | Standard charging
Qi wireless charging |
| Talk time autonomy | feature not registered | 2580 minutes | 43 hours | 1.8 days |
| Standby | feature not registered | feature not registered |
| Radiation rate | Realme Watch | Samsung Galaxy Watch Active 2 (40mm SM-R835U) |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.43W/kg (head) | 1.13W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |