The Soundwave audio bottle blasts your favourite soundtrack to keep you motivated and supports conference calls for easy, hands-free mobile answering system. Screw-on lid with a built-in, light-up, Bluetooth speaker which is complete with flashing LED lights to provide hours of on-the-go entertainment. Colours: Black. Sizes: 275mm(h) x 74mm. Features: Bluetooth working range is 10 meters (33 feet). Double walled 18/8 grade stainless steel construction. Vacuum insulated. Inner wall is plated with copper for ultimate conductivity to keep drinks hot for 12 hours and cold for 48 hours. Wide mouth opening for easy cleaning and filling. Playback via Bluetooth max 4 hrs operating time. Charging Time:2.5 hrs. Micro USB to USB cable included. IPX6 Water Resistant. Leed s Exclusive. 650ml capacity. Packaging: 1-piece premium gift box. Materials: 18/8 Grade Stainless Steel