... One year warranty Factory price and best quality 10000mAh portable wireless keyboard power bank with bluetoothHigh power, small size,portableOEM welcomePaypal ... when charging to 25%~50%, the second light flash, the first light become constant light, when charge to 50%~75%, the ... when charging to 75%~100%, the fourth light flash, the first third lights become constant light, all four lights lit charge ...