Huawei Original Stereo headset AM12 Plus Gold (EU Blister)
"In-ear headphones
Number of speakers: 2
Speaker Frequency range: 20-20kHz
Speaker sensitivity: 103dB +/- 2dB
Number of microphones: 1
Microphone frequency range: 100-10kHz
Microphone sensitivity: -40dB +/- 3dB
Earphone plug: 3.5mm, 4-pin, nickel-plated
Earphone plug line order: LRGM
Total cable length: 1100 +/- 50mm
Speaker type: Moving coil
Microphone: Electret, omnidirectional
Cable material: Translucent white round wire, Electrolytic copper
Wired control: Three-button control
Temperature: Operating 0°C to +45°C, Storage 0°C to +45°C
Humidity: 5% to 95%"
Number of speakers: 2
Speaker Frequency range: 20-20kHz
Speaker sensitivity: 103dB +/- 2dB
Number of microphones: 1
Microphone frequency range: 100-10kHz
Microphone sensitivity: -40dB +/- 3dB
Earphone plug: 3.5mm, 4-pin, nickel-plated
Earphone plug line order: LRGM
Total cable length: 1100 +/- 50mm
Speaker type: Moving coil
Microphone: Electret, omnidirectional
Cable material: Translucent white round wire, Electrolytic copper
Wired control: Three-button control
Temperature: Operating 0°C to +45°C, Storage 0°C to +45°C
Humidity: 5% to 95%"