Working principle: This product adopts the principle of cranking for power which after commutating and filtering to charge its built-in 80 mAh/3.6V NI-MH storage battery, as the power supply of lighting. It can also charge mobile phones via its voltage-stabilizing circuit. Attached with a multi-functional army knife: include a knife, a pair of scissors,a saw and a bottle wrench; compass function is also included.
  Features: 1. Cranking for power generation .2. Charging for mobile phone under emergency, 3 minutes cranking can provide 2-8 minutes talking time. 3. High luminance: the Max brightness is 45000 Mcd 4. Convenient to use, never need battery, just crank to charge.5. The head of the product can rotate ±54°, it is practical and convenient. 6. Attached with an army knife, it can be used directly and can also be used dividually, this enlarges its practicality 7. A compass included. 8. Exquisite exterior. Functions: 1. Cranking for power generation to supply for the lighting of 1 LED or 3 LEDs. 2. Charging for mobile phone.3. Multi-functional army knife.4. Compass. Main Technical Parameters: 1. Charge for mobile phone A. Voltage Output : 5.7V or 6.4VB. The Max. current output: ≥400 mA nbsp; C. The Max. power output: 2.5 W nbsp; D. 3 minutes cranking can provide 2-8 minutes talking time.2. Lighting A. | Max brightness | Max luminous flux | | 1 LED | 20,000 | Mcd | 1LED | 1,2 | Lm | | 3 LEDs | 45,000 | Mcd | 3LEDs | 3.3 | Lm |   B. | Lighting time after 1 minute cranking | | 1 LED | 90 | minute | | 3 LEDs | 30 | minute |   C. The head of the product can rotate ±54°3. Life –span| Switch lifetime | 10,000 | time | | LED lifetime | 100,000 | hour | | The plastic part lifetime | 5 | year | | The whole unit lifetime | 5 | year | Size: 172* 61**67mmWeight: 250.5g |