Speaker diameter:9mm Impedance:16±15% Frequency response:20-20000Hz SPL:87±3dB MIC:42±3dB Maximum Supported Thrust: 20mw Contact Pin: 3.5mm(90 degree) Cable length: 1.2m Fashion appearance, Crazy Robot style/simple but exquisite design. 3.5mm stereo with oxidation resistance gold-plating interface, strong compatibility. All in one control (music/calls).Wire control with microphone TPE is a kind of Rubber with High Elasticity , High Strength and Character of Plastic Injection Molding. As a New Material, It is Durable, Smooth-Touching,60A Ultra-Soft and Non-Toxic, Anti-Aging and No Harm to Human Skin. Angle earplug is debuged carefully improving the intimacy. Brand REMAX_ SKU 101220138_NP-1021948562 Cable Length 1.0m - 1.4m Model RM-502