Music Bottle Speaker - Bluetooth and TF Card Mode of Playing [Assorted Colours] 2 in one bottle speaker, perfect combination of sport water bottle and speaker 400 ml volume battery life, Class A High capacity lithium battery, 650 mAh Top Bluetooth chipset, perfect compatible with ios, Andorid Systm and bluetooth transmit distance over 10 meters waterproof, IPX 4 waterproof design