crank flashlight,crank dynamo flashlight Name:crank flashlight,crank dynamo flashlightType: LD28045 Specification: Material: Plastic, RubberHave two patents ... 1 minute, it can shine for about 40 minutes. 2. Charge for mobile phone, 1 minute wind-up can make the ... type) 3. Placed for a year, it generates electricity by winding-up, and still works normally.4. Ideal illumination tool, for ...