Dimensions<br> Width: 48.5 mm<br> Height: 39.5 mm<br> Thickness: 10.9 mm<br> Weight: 37.5g<br> Display type: IPS<br> Display size: Ultra-large 2.03" Display<br> Display resolution: 260 PPI, 240*296 pixels<br> Touch screen: YES<br> Case material: Plastic<br> Button material: Aluminum Navigation Crown<br> Buckle material: Plastic<br> Material: Durable and comfortable fluoroelastomer strap.<br> Width: 22 mm, Compatible with standard 22 mm quick release watch bands.<br> Wrist Circumference: 130-235 mm<br> Wrist Heart Rate Monitor,<br> Sensors<br> Pulse Ox Blood Oxygen Saturation Monitor,<br> Proximity sensor, Accelerometer.<br> Bluetooth version: BLE 5.2<br> Smartphone Compatability: Android 5.0or ios 9.0 and above<br> Operation temperature min: -20 C<br> Durability<br> Operation temperature max:40 C<br> Water resistance: IP 68<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store