Items: Black Buckle Strap Watch Screen Size: 1.83 Strap Material: Stainless Steel Body Material: Alloy Power Mode: USB Charging Operating Voltage: ≤36V Water Resistance Level: IP67 Wireless Version: Wireless 5.3 Screen Material: TFT Screen Resolution: 240p Wireless Property ...Items: Black Buckle Strap Watch Screen Size: 1.83 Strap Material: Stainless Steel Body Material: Alloy Power Mode: USB Charging Operating Voltage: ≤36V Water Resistance Level: IP67 Wireless Version: Wireless 5.3 Screen Material: TFT Screen Resolution: 240p Wireless Property: wireless Battery Properties: Rechargeable Battery Rechargeable Battery: Lithium Battery-Polymer Brand: COIUSOR