Phone requirements
iPhone running iOS 13.0 and above
or
Android phone with Google Play running 8.0 Oreo and above
Bluetooth 4.0 capability required
Battery
Type: Rechargeable Lithium Polymer
Capacity: 400mAh
Battery life in use
Without backlight: 30 hours
With backlight: 10 hours
Blended: 20 hours
Battery life in standby: 4-6 months
Charging: USB-A charger with pogo pin interface
Display
Screen technology: Memory in Pixel transflective LCD with LED backlight
Resolution: 208 x 208, 287 PPI
Active area diameter: 26mm (1 inch)
Bonded toughened glass
Sensors
Accelerometer
Gyroscope
Magnetometer
Connectivity
Bluetooth 4.0 low energy
Materials
ABS plastic
TPU
Silicone rubber
Toughened bonded glass
Interface
4 x physical buttons
Water and particle resistance
IP67 rated
Size and weight
49.8mm (1.96 inches) diameter, 18.6mm (0.73 inches) deep
30 grams (1 oz)