Rhythm Bluetooth? audio flask. This audio flask 'rocks out' with 530 ml. capacity to keep you hydrated and also boasts a removable, light-up Bluetooth? speaker that blasts out your favourite soundtrack. Supports conference calls for easy, hands-free operation. The speaker is complete with flashing LED lights that compliment music and video play. Includes a built in media stand which accommodates most large smartphones, providing hours of entertainment on-the-go. Bluetooth? working range is 10 metres. Includes Micro-USB to USB charging cable. Presented in gift box. Exclusive design. PP plastic.