1. Multiple sound effects and scene modes: The sound card supports multiple scene modes and multiple sound effects. It can become of children, men, women, etc., and add to the sound. 2. battery: Built-in 1200mAh rechargeable battery can provide long-lasting power for entertainment time, avoid frequent charging, and eliminate the trouble of insufficient battery power. 3. High compatibility: Universal USB interface for charging and connecting to a computer; standard 3.5mm plug for stable audio signal input and output. Compatible with main phone and computer. 4. Wireless connection: provide wired and wireless connection. Wired connection can achieve signal transmission, while BT wireless connection can bring convenience. 5. Easy to use: each button has a clear mark to indicate a specific function. The visual indicator shows the working status. The adjustment knob can meet the requirements of tuning Battery capacity: 1200mAh Power input: DC 5V 2A Power: 5W Recording: 16bit / 48kHz, 90dB Signal to noise ratio: 106dB Material: ABS colour: black Package Contents: 1 x sound card 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.