| Availability Status | Available, released to market | Available, released to market |
|---|---|---|
| Introduction Time | - | September 2017 |
| Size and Dimensions | 46 x 46 x 10.6 mm | 42.5 x 36.4 x 11.4 mm |
|---|---|---|
| Product Weight | 35g (without strap) | 52.8 gram (g) |
| Compatible SIM Card Types | No | eSIM |
|---|---|---|
| Other Body Features | Fiber-reinforced polymer body / Aluminum alloy frame / Nylon or silicone band / Water resistant up to 5 ATM (50 meters deep) | Aluminum body / Water resistant up to 50 meters deep |
| Display Technology | Retina OLED display / 1000 nits brightness | |
|---|---|---|
| Screen Size | 1.5 inch (~73.4% screen-to-body ratio) | 1.65 inch |
| Display Resolution | ||
| Screen protector type | Tempered glass / Anti-fingerprint coating | Sapphire protective glass |
| Display Technical Details | Max brightness up to 1500 nits / Always-on Display / 22mm band width | Display with 3D Touch |
| OS Version | Proprietary ZEPP OS 3.0 compatible with Android 7.0 and later and iOS version 14.0 and later | watchOS 4.0, upgradable to 8.4 |
|---|---|---|
| Chip Model | - |
| Alert Type | Vibrate | - |
|---|---|---|
| Speaker Type | Yes | Yes |
| Battery Type and Capacity | 475 mAh (fully charged in 2 hours) | 341 mAh Li-Ion (1.34 Wh), non-removable battery |
|---|---|---|
| Battery Standby Time | - |
| Smart Sensors | Optical heart rate sensor with SpO2 monitoring, PPG biometric sensor, BIA bioelectrical impedance sensor for body fat measurement, accelerometer, gyroscope, geomagnetic sensor, barometer, ambient light sensor, thermometer | Accelerometer, Gyroscope, Heart rate sensor, Barometer |
|---|---|---|
| Messaging Method | Received notification alerts / Display text messages | - |
| Other Features and Capabilities | - | Natural language commands and dictation (talking mode) |
| Communication Technologies | No cellular connectivity |
|---|
| Wireless Network Type | ||
|---|---|---|
| Bluetooth Support | 4.2, A2DP, LE | |
| GPS Support | Yes | Yes, with A-GPS, GLONASS |
| NFC Support | Yes | Yes |
| USB Connections Type | No, charges with proprietary magnetic charger | No |
| Available Color Options | Gray, Black | Black, Silver |
|---|---|---|
| Global Price Range | - |
| CPU | - | Dual-core |
|---|---|---|
| GPU Model | - |
| Internal Memory Capacity | - |
|---|
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