Cooling area: 30mm*30mm
Cooling unit Size: 35mm*35mm*20mm
Cooling unit Weight: 29 g
Cooling power max: 5 watts, for comparison, a typical air conditioner consumes 700 to 2,000 watts
Battery last 1.5~ 2 hr (continuous cooling)
Total weight: 67 g
Wrist band is elastic and washable
Default wrist band suitable for wrist circumference: 14-18 cm
Suggested to order together with Extra large wristband for bigger wrist circumference.