The Soundwave audio bottle blasts your favorite soundtrack to keep you motivated and supports conference calls for easy, hands-free operation. 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. Bluetooth working range is 10 meters (33 feet). Double wall stainless steel construction. 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. Max 4 hrs operating time. Charging Time: 2.5 hrs. IPX6 Water Resistant. 22oz.