Bluetooth version: V5.0 AC6925B Drive device: 2*5W full frequency unit Product support: general equipment, automatic decoding of common audio formats Product function: One-key free high-definition call, IPX5 waterproof and dustproof, support 32G (SD/TF) card playback Rechargeable battery capacity: 3600mAh (rechargeable lithium-ion battery) Sound unit: 45mm single speaker, EXTRA BASS passive diaphragm and mono speaker Microphone: built-in noise reduction microphone Working voltage: 3.7V Product power: 5W Support input: DC 5V Product frequency: 100Hz-20KHz Wireless working range: 5m high-fidelity output, 10m effective distance Charging socket: MICRO-USB Battery life: about 12 hours (maximum volume is about 7 hours) Charging time: about 3-4 hours Colour: White Material: ABS Size: 13.6 x 13.6 x 4.8cm Package Contents: 1 x portable hand hook 1 x speaker 1 x charging data cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.