No batteries included, You will not worry about its running out of energy at any time.
Capacitors are designed into electric energey storage, they have long term storage working life.
60 seconds hand cranked for 60 minutes lighting
60 minutes USB outer power source gets 100% fully charged
USB port power output: 5V 1A around ( 5 Watts )
Note: under normal 1 minute hand cranking, a mobile phone only can get charged with a low volume of energy,
Not for long time charging. it is just for a short time emergency comunicating.
Size: 150mm height x 46mm diameter, Weight: 220g, Maximum luminous flux: 400 lumens.,Range: 50meters
Switch: central control switch.
Working Mode:
Extremely bright (long press the switch button to open, release the hand to close)
Double click switch: weak light - Low light - Medium light - high light, long press off (gear memory function)
Red light - blue light - Green light by curculated Switch
Waterproof grade: IPX6
Material: ABS plastic