Double-wall Steel Insulated Hydration Bottle with Rechargeable Bluetooth Wireless Speaker, Green. Enliven your exercise with the iBTB2 Bluetooth speaker and stay hydrated with the attached water bottle. A Bluetooth portable audio system is built into a fabric-wrapped, plastic wireless cabinet that screws onto the bottom of a double-wall insulated steel water bottle. Answer any incoming call with built-in Speakerphone with Echo-noise cancellation. Play audio wirelessly from Bluetooth enabled devices. Speakerphone with digital voice echo cancellation and talk/end control. Double-wall insulated steel bottle with cap attached carry loop. Bottle keeps liquids cool or hot for hours (less than 14 temperature change in 3 hours). Bottle holds up to 16.9 fluid ounces (500ml). BPA free
