| Availability Status | Available, released to market | Available. Released November 2019 |
|---|---|---|
| Introduction Time | - | 2019, September |
| Size and Dimensions | 46 x 46 x 10.6 mm | 40 * 40 * 11 millimeter (mm) |
|---|---|---|
| Product Weight | 35g (without strap) | - |
| Compatible SIM Card Types | No | No |
|---|---|---|
| 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 1 meter deep / Silicone band |
| Display Technology | AMOLED / Square | |
|---|---|---|
| Screen Size | 1.5 inch (~73.4% screen-to-body ratio) | 1.3 inch |
| Display Resolution | ||
| Screen protector type | Tempered glass / Anti-fingerprint coating | Gorilla Glass 3 |
| Display Technical Details | Max brightness up to 1500 nits / Always-on Display / 22mm band width | Color touchscreen |
| OS Version | Proprietary ZEPP OS 3.0 compatible with Android 7.0 and later and iOS version 14.0 and later | Fitbit proprietary OS / Compatible with Android and iOS |
|---|
| Alert Type | Vibrate | - |
|---|---|---|
| Speaker Type | Yes | - |
| Battery Type and Capacity | 475 mAh (fully charged in 2 hours) | Lithium Polymer |
|---|---|---|
| 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, Compass, Pedometer, Heart rate counter, Altimeter |
|---|---|---|
| Messaging Method | Received notification alerts / Display text messages | - |
| Other Features and Capabilities | - | Amazon Alexa voice assistant |
| Communication Technologies | No cellular connectivity | No |
|---|
| Wireless Network Type | - | |
|---|---|---|
| Bluetooth Support | Yes, Version 4.0 | |
| GPS Support | Yes | Yes |
| NFC Support | Yes | Yes |
| USB Connections Type | No, charges with proprietary magnetic charger | - |
| Available Color Options | Gray, Black | Black |
|---|
| Internal Memory Capacity | - | Storage capacity for over 300 music tracks |
|---|
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