Enjoy uninterrupted music playback for up to 8 hours and a standby time of over 30 days, thanks to the 1800mAh lithium battery. Boasts of strong anti-interference ability, thanks to its internal magnet speakers. Seamlessly from Micro-SD cards and AUX-in devices from streaming via Bluetooth. Experience powerful, loud, and rich bass sound from a compact speaker. With a 10W high-power output, it is perfectly tuned for music, making bass clearer and more transparent. Effortlessly connect through Bluetooth V5.0 which provides a reliable and stable wireless connection up to 10m. Battery capacity: 1800mAh lithium battery Bluetooth version: 5.0 Speaker: 5W*2 Transmission distance: about 10m Signal-to-noise ratio: ≥90dB Working voltage: 3.7V Distortion: Less than 1% Charging voltage: DC5V Charging interface: Micro-USB Call duration: about 3h TF card playback: 3-5H Standby time: ≥30 days Colour:Black Material:ABS Size:7.5x7.5x18.5cm Package Contents: 1 x Wireless Speaker 1 x lanyard 1 x Charging cable 1 x English manual Only the above package content, other products are not included. Note: Light reflection 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.