Huawei Original Stereo headset AM115 White (EU Blister)

"Semi in-ear headphones
Number of speakers: 2
Speaker Frequency range: 20-20kHz
Speaker sensitivity: 106dB +/- 3dB
Number of microphones: 1
Microphone frequency range: 100-10kHz
Microphone sensitivity: -42dB +/- 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: Gray round wire, Electrolytic copper
Wired control: Three-button control
Temperature: Operating -10°C to +55°C, Storage -40°C to +70°C
Humidity: 5% to 95%"