JBL Flip 4 Waterproof Portable Wireless Bluetooth Speaker (Black)JBL Flip 4 Waterproof Portable Bluetooth Speaker. Pill style water proof speaker with a black finish. Features Wirelessly connect up to 2 smartphones or tablets to the speaker and take turns playing impressive stereo sound Built in 3000mAh rechargeable li ion battery Supports up to 12 hours of playtime Ipx7 waterproof means no more worrying about rain or spills; you can even submerge flip 4 in water JBL connect+ allows you to Link more than 100 JBL