1. Adopt double-sided layer characteristics 2. Double-click to turn on the flashlight. Long to turn off the output. Reverse installation does not burn the motherboard. 3. The material is made of ceramic base insulation protection, so that you can operate with more confidence Color: Green Material: plastic Product Description Model: A8 Mechanical Rigidity: Rigid Layers: double sided Base material: Copper Insulation material: ceramic base Insulation Thickness: Conventional Board Processing technology: calendered foil Single USB output: 5V/0.1-2.1A (MAX); Dual USB output: 5V/0.1-2.4A (MAX); IN input (Micro-Android port): 5V/2.1A; Type-C port input: 5V/2.1A (PD charger is not supported); Other functions: double-click to turn on the flashlight, long to turn off the output; reverse installation does not burn the motherboard. Battery requirements: 3.7V lithium battery, 3C rate discharge, internal resistance 50 milliohms, single actual capacity not less than 1000 milliamperes, connected in parallel Note: The color of the motherboard bottom plate is not fixed, and the color of each batch of board cards be different, basically blue and green bottom plates Package Contents: 1 x Mobile power board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.