| Introduction Time | 2019, June | December 2020 |
|---|---|---|
| Availability Status | Available. Released June 2019 | Available. Released December 2020 |
| Size and Dimensions | Unspecified / Not specified | 8.95 * 35.8 * 40.5 millimeter (mm) |
|---|---|---|
| Product Weight | Regular Version: 22.1 g / NFC Version: 22.2 g | 19.5 gram (g) |
| Other Body Features | Water resistant up to 50 meters deep | |
|---|---|---|
| Compatible SIM Card Types | - | No |
| Display Technology | AMOLED / Color / Touchscreen | |
|---|---|---|
| Screen Size | 0.95 inch | 1.55 inch |
| Display Resolution | ||
| Multi-Touch Capability | No | - |
| Screen protector type | Scratch-resistant glass | - |
| Display Technical Details | 2.5D / 400 nits brightness / 24-bit color depth | - |
| OS Version | Compatible with Android 4.4 and iOS 9 and later | Proprietary OS compatible with Android and iOS |
|---|
| Internal Memory Capacity | 16MB, 512KB RAM | - |
|---|
| Battery Type and Capacity | Non-removable 135 mAh Li-Po battery (standard version) / Non-removable 125 mAh Li-Po battery (NFC version) | Non-removable 220 mAh Li-Ion battery |
|---|---|---|
| Battery Standby Time |
| Smart Sensors | 3-axis accelerometer, optical heart rate sensor, pedometer, 3-axis altimeter, watch wear detection sensor | Huami's proprietary sensor (BioTracker™ 2 PPG) with blood oxygen calculation, Accelerometer, Gyroscope, Altimeter, Ambient light sensor, Vibration motor, Microphone |
|---|---|---|
| Messaging Method | Received notification announcement / Display received messages and emails | - |
| Other Features and Capabilities | Pedometer / Distance traveled measurement / Heart rate measurement / Calories burned calculation / Display turn-on by lifting hand / Sleep monitoring / Sedentary reminder / Xiao AI voice assistant (NFC China version only) / Microphone (NFC China version only) | Heart rate monitoring, Blood oxygen level measurement, Sleep monitoring, Health monitoring, Supports over 70 sport modes, Supports Amazon Alexa voice assistant |
| Bluetooth Support | Bluetooth 5.0 | |
|---|---|---|
| GPS Support | No | Yes |
| NFC Support | NFC version only | No |
| Wireless Network Type | - | No |
| USB Connections Type | - | No, charges via proprietary charging dock |
| Available Color Options | Black, Brown, Blue, Orange, Pink | Black, Pink, Green |
|---|---|---|
| Global Price Range | 25 dollar ($) \$ | - |
| Communication Technologies | - | No |
|---|
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