Shell material: plastic
Output power: 3W
Battery: 4500mAh lithium battery, 3.7V
Play time: 5 hours
Power mode: USB
Charging time: 3.5h
Water bottle capacity: 600ml
Frequency range: 150HZ-20KHZ
Bluetooth version: Bluetooth 4.1
Function: Bluetooth self-timer, mobile phone holder, water, removable washable lid