Product information: 

Dimensions: length, width, height (68 * 52 * 12mm)
Power supply: 5V micro USB Android interface charging cable
Battery: Polymer lithium battery with a capacity of 850mah
Usage time: Charging current of 250ma, about 6 hours to fully charge, working current of about 7MA, can be used for about 200 hours (168 hours per week) when fully charged
Note: The core electronic components are imported in their original packaging. Suggest using multiple machines in a distributed manner for better results.