Rugged, IPX7 Waterproof, Floating Bluetooth Speaker EcoConnect compatible - pair two units together for stereo sound Bluetooth Wireless Audio Connection for use with Smartphones and other Smart Devices 5 Watt Full-fidelity Mono Speaker Control Buttons: Power, Bluetooth Pairing, Volume +/-, and Speakerphone Answer Integrated side magnets for mounting Aux-In Audio Connection Integrated ¼-20" screw post for mounting options Nylon Lanyard and Carabineer Clip included 5V USB Input 1.0 A Aux In (3.5mm) Power 3.7V, 500mAh Lithium Battery Over 7 hours playtime Fully re-charges in approx. 2.5 hours What's in the box x 1 Speaker x 1 USB Charging Cable x 1 Carabiner and Nylon Layard (small)