• TWS boom box :Enjoy high-quality sound from two separate speakers with TWS technology for a more expansive and clear audio experience. • IPX5 waterproof:Take your music anywhere without worrying about water damage with an IPX5 waterproof rating. • 3D stereo bass :Experience immersive audio with 3D stereo bass for a more intense listening experience. • High-power Bluetooth speaker:Enjoy powerful and clear sound with a maximum power output of 40W. • Portable and lightweight :Pack light and take your music with you on-the-go with a portable and lightweight speaker that is easy to carry. • Waterproof design:Take your music anywhere without worrying about water damage with a waterproof design that is suitable for use in all weather conditions. • 3D stereo bass :Experience immersive sound with 3D stereo bass that creates a surround sound effect. • High-power Bluetooth speaker:Enjoy powerful and clear sound with a high-power Bluetooth speaker that delivers 40W of power. Selling Point Battery capacity: 4000mAh Bluetooth version: 5.2 Speaker: 40W Transmission distance: 10m Frequency response: 20Hz-20KHz Signal to noise ratio: ≥ 85dB Working voltage: 7.4V Distortion:<1% Charging voltage: DC5V Charging interface: type-c TF card playback: 2.5-3.5h Standby time: ≥ 30 days Charging time: 4-6H