| Introduction Time | 2019, June | September 1, 2022 |
|---|---|---|
| Availability Status | Available. Released August 2019 | Available, released September 9, 2022 |
| Size and Dimensions | 42 * 35 * 12.5 millimeter (mm) | 45 x 36.8 x 11.7 mm |
|---|---|---|
| Product Weight | 25 gram (g) | 40.7 g (with Strap) |
| Compatible SIM Card Types | No | No |
|---|---|---|
| Other Body Features | Metal body, plastic band / Water resistant up to 30 meters deep | Rectangular plastic body / Silicone band |
| Display Technology | Color | |
|---|---|---|
| Screen Size | 1.28 inch | 1.78 inch (~68.7% screen-to-body ratio) |
| Display Resolution | ||
| Multi-Touch Capability | No | - |
| Screen protector type | Scratch-resistant glass | Yes |
| Display Technical Details | - |
| OS Version | Huami proprietary | Proprietary OS compatible with Android 5.1 and later and iOS version 11.0 and later |
|---|---|---|
| Chip Model | - |
| Internal Memory Capacity | Stores 60 seconds of ECG data |
|---|
| Battery Type and Capacity | Non-removable 200 mAh battery | Non-removable 345 mAh Li-Ion battery |
|---|---|---|
| Battery Standby Time | - |
| Smart Sensors | PPG heart rate sensor, ECG sensor, Six-axis IMU sensor | Accelerometer, Optical heart rate sensor with SpO2 (blood oxygen level calculation) capability, Accelerometer |
|---|---|---|
| Messaging Method | - | Received notification alerts / Display text messages |
| Bluetooth Support | 5.3, A2DP, LE | |
|---|---|---|
| GPS Support | No | |
| NFC Support | No | No |
| Wireless Network Type | - | No |
| USB Connections Type | - | No, charges via proprietary charging dock |
| Available Color Options | Black, Brown, Pink | Black, Gray |
|---|---|---|
| Global Price Range | - |
| Speaker Type | - | Yes |
|---|
| Communication Technologies | - | No cellular connectivity |
|---|
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