SpecificationsAIWA ESTM-50 In-Ear Headphones Stereo In-Ear headphone with remote + microphone.Ultra Compact Dynamic In-Earphone with Ergonomic 30 angle for a firm and secure fit.Built-In High Sensitivity Microphone for Clear Audio Handsfree Phone Calls.Tangle Free High transparent thick Durability Cord with 120cm Length. Gold Plated 3.5mm Stereo Plug.Metal Earpiece Housing for High Quality Sound and Powerful Bass.Large 10mm dynamic neodymium Speaker Driver with 16 Ohm Impedance.Audio Frequency Response: 20Hz ~ 20,000Hz,sensitivity 99DB.Compatible with All Mobile Devices.In-Wire Micro Remote Controller. light weight, compact and comfortable.Weight: 13 gr. Velcro Belt + 3 pairs of Silicone Eartips (S,M,L).