Specifications:

input: dc - 5v1a

output: 5w = dc - 0.4a

output power: watch = 2w

built in battery capacity: 700ma / polymer

wireless charging working frequency: 110khz - 220khz

transmission distance: 2mm

charging efficiency: 73%

net weight: 73g

color: Black white

size: about 6 * 6 * 3cm / 2.36 * * 1.18in 2.36

power capacity: 700mah