Small Size,Big PowerFull capacity (10000mAh) can charge heated vest for 4-6 hours. It very portable, the weight is only close to one iPhone X.Compatible with Heated Jacket,Heated Coat,Heated Clothing,Heated Pant,Heated Hoodie,USB Heated Blanket,Heated Seat/Chair ect. Dual output Power BankThere are Type-C and Micro dual input (5V/2.1A), and 2 USB output Ports that can charge two devices at the same time which you can share them with friends. A USB Micro cord is included, it is strongly recommended to use a 5V 2.1A wall charger to charge the power bank, that can save more charging time. LCD DisplayIt accurately displays 1% to 100% of the remaining power. It is a hidden display which will light up when the device is connected or turned on, and automatically sleeps after 35s at non-working state. Li-Polymer cells This product uses Li-Polymer cells. Inside, there is built-in intelligent-voltage-regulator-safety-protection chip. Multiple protection programs are to avoid sho