Qi Wireless Power Bank w/ 2.1A USB Port (10,000) mAh). Weighing less than 6 ounces. 161 g, this ultra slim design has a large 10,000 mAh capacity that supports both wireless Qi and conventional USB charging. Qi charging is an international charging standard that charges through induction transfer, is approximately 40% faster as compared to other general chargers and generates up to 50% less heat. Charge your mobile device by placing your compatible device (i.e smartphone) on top of charging pad. Qi-certified receiver offers large charging surface and provides around 5V1A charge (abiding by Qi 1.1 standard) and on /off button. 2.1 USB port for conventional charging with your own charging cord. Constructed of ABS with rubberized surface to provide secure charging experience.