The JBL GO 2 is a full-featured waterproof Bluetooth speaker to take with you everywhere. Wirelessly stream music via Bluetooth for up to 5 hours of continuous JBL quality sound. Making a splash with its new IPX7 waterproof design, GO 2 gives music lovers the opportunity to bring their speaker poolside, or to the beach. GO 2 also offers crystal clear phone call experience with its built-in noise-cancelling speakerphone.General Specifications Output power: 3 Watt Music playing time: 5 hoursDimensions Dimensions: 7.12 x 8.6 x 3.16 centimeters Weight: 0.18 kilogramControl and Connection Specifications Bluetooth version: 4.1Battery Battery capacity: 730 mAh Charging time: 2.5 hoursFeatures Waterproof: Yes Speakerphone: Yes Bluetooth: Yes 3.5 mm audio cable Input: Yes Auto power off: Yes