Specifications: 1) Input: AC 100 - 240V, 50 / 60Hz 2) Output: DC 1.4V, 1,100mA (AA) 3) Operating temperature: 0 - 35oC 4) Dimensions (W x L x H): 70 x 110 x 31mm 5) Weight: 110g (batteries not included) 6) Charges 1~4 AA / AAA Ni-MH or Ni-Cd rechargeable batteries 7) 4 flash LEDs indicate charging status 8) Build-in switch power, worldwide voltage 100 - 240V 9) Over voltage and over heat protection 10) Safety features: a) Voltage monitoring function: i) -?V control ii) Auto switch to trickle mode after fully charged b) Safety timer: auto cut off after 3 hours of standard charging c) Temperature monitoring function: over-heat protection d) Bad battery, alkaline and primary battery detection 11) Accessories: 4 Ni-MH batteries Packing: Blister card