2 x 1.375 in. Non-replaceable 2.6V 20MAH NI-NH battery.
Robocrank Keyring & Light
You’ll never be in the dark with this little robot buddy in your pocket or purse.
Crank his collapsible arm for one minute to recharge the battery and get up to 10 minutes of light. An ON/OFF switch makes sure you don’t use his power up too soon.