Compatible platforms: iOS,ANDROID Screen size: 1.54 inches Material: zinc alloy Battery capacity: 220 mah Wear mode: wristband style Operation mode: touch type + touch type Interface: USB 2.0 Wireless distance: 5m(inclusive)-10m(inclusive) Function: heart rate monitoring<img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/8f44bb90-9472-4902-b84d-5052dd1607c0.jpg" style="max-width:100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/454597d0-443b-4278-be77-a51c44bf420a.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/fe1f4d3a-90ed-4572-8a60-9e82a107c826.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/f57c9d65-5b8f-4555-950a-68156631ff7a.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/c4fd9ffb-4d87-4875-9c77-5c3e95ebf942.jpg" style="font-size: 14px; max-width: 100%;">

Bluetooth sports smart phone watch