With this power bank you can power your lamp for at least 7,5 hours. And even longer when you use a lamp with dimmer, slightly dimmed. The display shows the percentage of power left.

It has a second USB outlet to charge your phone while playing; this second outlet cannot handle a second lamp though, for that its power is not sufficient. It comes with a short USB charging cable. 

Dimensions:  14.3 x 6.6 x 2.8 cm  Weight 340 Grams