The digital weight scale is bulit into a power generator ,
which is also features auto power off . No need battery .
Shake it and get power on .
Body dimension : 15.3 X 3.5 X 3.9 cm
Product weight : 120 g
Main material : ABS . PE .Metal
Feature : * Weight scale
* Unit system exchangable
* +/- 2% weight accuracy
* Auto Power Off