| Introduction Time | 2019, June | July 26, 2022 |
|---|---|---|
| Availability Status | Available. Released August 2019 | Available, released August 2, 2022 |
| Size and Dimensions | 42 * 35 * 12.5 millimeter (mm) | 45 x 37 x 11.5 mm |
|---|---|---|
| Product Weight | 25 gram (g) | Without Strap: 40 g / With Strap: 54 g |
| Compatible SIM Card Types | No | No |
|---|---|---|
| Other Body Features | Metal body, plastic band / Water resistant up to 30 meters deep | Rectangular metal body / Silicone band / IP68 certified for water and dust resistance (up to 1.5 meters) |
| Display Technology | Color | |
|---|---|---|
| Screen Size | 1.28 inch | 1.8 inch (~67.5% screen-to-body ratio) |
| Display Resolution | ||
| Multi-Touch Capability | No | - |
| Screen protector type | Scratch-resistant glass | - |
| OS Version | Huami proprietary | Proprietary OS compatible with Android and iOS |
|---|---|---|
| Chip Model | - |
| Internal Memory Capacity | Stores 60 seconds of ECG data | - |
|---|
| Battery Type and Capacity | Non-removable 200 mAh battery | Non-removable 340 mAh Li-Ion battery (fully charged in 2.5 hours) |
|---|---|---|
| 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 |
|---|---|---|
| Messaging Method | - | Received notification alerts / Display text messages |
| Other Features and Capabilities | - | Supports 110 sport modes, heart rate monitoring, blood oxygen level measurement, sleep status, stress monitoring, watch face customization, weather display, phone and calendar notification display, date and time display, timer, alarm |
| Bluetooth Support | 5.3, A2DP, LE | |
|---|---|---|
| GPS Support | No | 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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