Display: 1.09" TF Color Screen, Resolution: 240 x 240 Pixel, Color: Gold, Water Resistance: IP67, Battery Life: 5 - 7 Days, Battery Type: Lithium Polymer Battery, Battery Capacity: 200mAh, Sensor: 3-Axis G-Sensor, Operating Temperature: -10°C ~ 50°C, Compatible Systems: Android 4.4 and Above, iOS 10.0 or Above, Two Staraps Inside, German Design.