The JBL Charge 3 speaker is a waterproof boom box that can accompany you to the beach or the pool. It has an internal rechargeable battery so you can play your music wherever you go, allowing you to share it with family and friends. It connects via wireless Bluetooth, line-in through USB, and Micro-USB. At just 21.7cm long and 780g in weight, the JBL Charge 3 is convenient and fun.