Aroma Mobile Accessories - Stereoearphone - Toofan - Champ - Polybag Packing Unit Size : 10 mm (Moving-Coil speaker) Impedance : 16 Ω ± 3 Working Power : 100 mw The headset pin : 3.5 mm stereo plug Frequency response : 20-20000Hz Acuity : 103 db ± S.P.L at 1 KHz Wire length : 120 cm ± 5 Please wear your earphone correctly, put earplug with “L” in left ear and “R” in right ear. When listening music, we suggest you adjust the volume to a proper level to protect your eardrums. Please do not use earphones while driving. Give extra life to your earphone by keeping it clean and dry, keep it away from magnetic field. Please click here for more info: https://bit.ly/33mQ5Nx