Entertainment is guaranteed when you take this power bank and wireless earbud combo with you. The tested UL 2056 power bank is made of 2200 mAh lithium ion Grade A non-recyclable battery which is very well capable of charging most devices as well as recharging the earbuds for reuse. The earbuds are extremely high definition stereo standard earbuds with Bluetooth® 4.1 Wireless Technology and an in-built microphone for communication as well as guaranteed 3 hours of high definition music play ...