Specifications:? 1.Dimensions: approx 200¡Á150¡Á100mm? 2.Weight:360g? 3.Gear adjustment: From low to high according to your request 4.Input voltage: DC 5V? 5.Output voltage:DC4V-6V?/Output current:0.35A-1A? 6.Power supply: USB/18650 Lithium battery How to use it in a better Way ?? 1. Use our rechargeable battery for outdoor activities as a portable and wireless one, can work 3-7 hours...