Battery capacity: 2000mAh lithium battery This speaker is portable, making it easy to carry around and use on-the-go. TF Card & AUX Audio :This speaker supports TF card and AUX audio, allowing you to play your favorite tunes without needing to connect to a device. With its powerful subwoofer and stereo sound mode, this speaker delivers a clear and loud sound. This speaker is waterproof, making it perfect for outdoor activities like camping or picnics. Battery capacity: 1500mAh lithium battery Bluetooth version: 5.0 Speaker: 4Ω5W Transmission distance: about 10m Frequency response: 20Hz-20KHz Signal-to-noise ratio: ≥85dB Working voltage: 3.7V Distortion: Less than 1% Charging voltage: DC5V Charging interface: Micro-USB TF card playback: 2.5-4H Standby time: ≥30 days USB output: 5V1A Colour:Black Material:ABS Size:7.5x7.5x12.5cm 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.