JEWEL OF SOUND - Diamond earphones have a High Resolution sound with an exclusive design. HI-RES ANYWHERE - On the street, at home, on public transport Its small size allows you to take them anywhere. JAPANESE ENGINEERING - Advanced audio development tuned by Aiwa engineers offers great sound for its size. Specifications - Hi-Res Audio. Hands-free calling function. Omni-Directional Condenser Mic Multifunction controller. Gold plated 3.5mm stereo plug. Soft anti winding cable. Length 120cm Y type Speaker Diameter 10mm Titanium Diaphragm., Magnet: N40; Voice coil: Cu Rated Input: 3mW. Maximum output: 5mW. Frequency response: 10Hz-40kHz. Sensitivity: 102dB Impedance: 21 Ohms Suitable for all devices. Shall material: Aluminium alloy & PC Hybrid silicone (L, M, S) earplugs. Hi-Fi Stereo with deep bass. Weight: 14.70g.