1. It is ergonomically designed and comfortable to wear. 2. The 3.5mm single plug-in version is suitable for mobile phones + tablets + single-hole notebooks and other devices, dual-channel stereo surround sound, high-definition clean sound quality, suitable for music + games. 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
