Attention: Welcome to my shop We ship the product from China, the delivery time is 7-14 days Product DescriptionModel: Zeblaze BtalkWater Resistant: IP68Chip: Realtek 8763eDisplay Size: 1.86'' Large Color DisplayDisplay Resolution: 240*300 pixelsSensor: Wrist Heart Rate Monitor, Pulse Ox Blood Oxygen Saturation Monitor, Proximity sensor, Accelerometer.Bluetooth: BLE 5.0Battery Capacity: 300mAh Li-pol battery.Battery Life: Typical usage modes Up to 15 daysHeavy usage modes: Up to 7 daysCoutinuous Voice Calling: Up to 280 minsCharging Time: About 1.5 hoursAPP Name: GloryFitMaterial: Durable and comfortable TPU strap.Width: 22 mm, Compatible with standard 22 mm quick release watch bands.Wrist Circumference: 130-220 mmDial size: 39 x 47 x 10.9 mmSmartphone Compatability: Android 5.0 or iOS 9.0 and aboveFEATURES: Voice Calling Features, Clock Features, Health Monitoring, Daily Smart Features, Activity Tracking Features,Sport Modes