The beam bank is a small, portable rechargeable battery with a built-in solar panel capable of providing 2 full-phone charges or 1 partial tablet charge. Designed to keep your devices juiced-up while on-the-go, the beam bank is made from heavy-duty plastic and rubber, ideal for outdoor use. Included: 1 beam bank. 1 carabiner. 1 micro-USB charging cable. 5.75" x 3" x 0.75". 0.3 lbs.