Key specifications/special features:
Trumpet caliber: 10mm±0.15
Trumpet impedance: 32Ω±15
Trumpet sensitivity: -42db±3dB
Trumpet the loudest level: 96dB ±3dB
About balance: ≤±3dB
Plug: four part plastic tray
Wire length: (the outer wall material) 120cm±2cm, ektexine: TPE
Cable core: 0.08mmx8
Function: two-channel stereo, hands-free calls, the volume control
Shell (material, craft): aluminum oxide, stoving varnish, ABS engineering materials