consumed power:about 5.5W  
working current:about 1500mA  
Charge current:about 90mA  
unit weight:20.2g  
Unit Size: 79.8X31.2X19.8mm

battery:3.7V 250mAH  polymer lithiumcell  
Charging time:about 4 hours  
Number of uses :about 150 times after full charging