Extraordinary Design and Powerful: Credit card size, handy carry, UV and PU oil processing makes it soft touching and unique standout among other power banks. Dual USB charging output ports power bank, charging 2 devices simultaneously Rapid Charging Power Bank: Auto detects your device to deliver its fastest possible charge speed up to 2.4A. DC 5V/2.4A input is twice as fast as normal DC 5V/1A input - a full recharge only takes 3-4 hours with a 2.4A adapter Palm-sized and High Capacity: Ultra compact 3.9 x 2.5 x 0.5 inches size and 4.6 ounces light weight, quite comfortable to hold in your hand or fit into your pocket. Safety Protection: Equipped with high-desity Li-Polymer battery. Provide the overcharge, discharge, overload, short circuit protection. Promise to protect you and your device safety. The power bank with exclusive lithium-Ion battery can be recharged over 500 times without the battery losing effectiveness