• 57mm large speaker, create HiFi stereo sound effect

• Deep and heavy bass, super excellent music experience

• 3000mAh battery, long standby time, 8 hours using time

• Portable and waterproof, suitable for outdoor use, no fear of rain

• Bluetooth 5.0 stable and fast connection, support TWS function

Specification:

• Function: Bluetooth, TF card, U disk, call, AUX

• Battery capacity: 4400mAh

• Actual battery capacity: 3000mAh

• Bluetooth version: 5.0

• Speaker: 20W

• Transmission distance: 10m

• Frequency response: 100Hz-20KHz

• Signal to noise ratio: ≥85dB

• Working voltage: 3.7V

• Distortion: <1%

• Charging voltage: DC5V

• Charging port: Micro USB

• Talk time: 6h

• Playing time: 8h

• Standby time: ≥90 days

• Charging time: 6-10H

• Weight: 400g