... , can shine for 10 minutes; 3.3.6V/20mA Lithium battery; Description of hand crank dynamo led Keychain ligh:Model No ... :CE & ROHS; 3)Description: Built-in 2 LEDs light, no battery required;Just crank 1 minute , 2 LEDs will shine for ... design.;4) Candle Power:13,000~15,000 mcd;5)Battery: 3.6V/20mA Ni-MH Battery;