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. Crafted in a compact design with 12 eye-catching colors to choose from, GO 2 instantly raises your style profile to all-new levels.Technical specifications:Bluetooth version: 4.1Support: A2DP V1.2, AVRCP V1.5, HFP V1.5,HSP V1.2Transducer: 1 x 40mmOutput power: 3.1W RMSFrequency response: 180Hz – 20kHzSignal-to-noise ratio: ≥80dBBattery type: Lithium-ion polymer(3.7V, 730mAh)Battery charge time: 2.5 hoursMusic playing time: up to 5 hours (varies byvolume level and audio content)Dimensions (H x W x D): 71.2 x 86.0 x31.6 (mm)Weight: 184 gramsBluetooth transmitter power: 0-4dBmBluetooth transmitter frequency:2.402–2.480GHzBluetooth transmitter modulation:GFSK/DQPSK/8DPSKWhats in the box1 x JBL GO 2 Speaker unit with built in Li-Ion rechargeable battery1 x USB to Micro USB charge cable1 x Quick-start Guide - but its so easy to use :-)1 x Safety sheet1 x Manufacturers Warranty card (1 year)