powered by solar and hand cranking (1)120 round per minute(or crank 1 minute)the handle, output:aa0.4w, to keep brightin SPECIAL FEATURES:3 super bright led(13000-15000MCD)Solar panel: Amorphous silicon Material: plastic (ABS)Product size: 9*5*3.4cmUnit weight: 70g                                                                              Buit in rechargeble lithium battery( 3.6v/40mAH)powered by solar and hand cranking      1.120 round per minute(or crank 1 minute)the handle, output:0.4w, to keep brighting 5-8 minutes      2. powered by solar in 3 hours to keep brighting 45-60minutes 

flashlight key chain