1. It is ergonomically designed and comfortable to wear. 2. The dual 3.5mm+USB version is suitable for desktops + dual-hole notebooks and other devices, with dual-channel stereo surround sound, clear and clean sound, suitable for music and games (USB is a light-emitting plug, plugged or unplugged). 3. Sensitivity: -42+/-3dB 4. Directionality: omnidirectional 5. Impedance: 2.2K Ohm 6. Horn diameter: 50.00mm 7. Impedance: 20 Ohm +/-15% 8. Frequency response: 20-20000Hz 9. Input voltage: USB 5V 10. Output power: 20mW (1KHz 0dB) 11. Cable length: 2.13m
