Premium aluminium power bank perfect for laser engraving around the circumference of the barrel leaving an everlasting message. The dynamo has a capacity of 2200mAh. Included is a Micro SD-USB cable to recharge via USB port or a mains adapter. The dynamo power bank is equipped with a grade A lithium ion battery suitable for recharging over 500 times and comes ROHS CE and FCC certified. Limited one year warranty. Product not supplied with cable to charge your phone or device.