Features: Single-sided earpbud with flexible coiled cable, in ear style earphone without microphone. Compact-design and light weight, easy use, enable you to listen music. 90 Degree considerate curved-plug design, insert and use, better protecting the plugs connection and extending the service life of the earphones. Double-layer in ear design, physical noise reduction for comfortable and unobtrusive wear. 3.5mm Jack, universal suitable for bluetooth-compatible audio receiver, mobile phone, computer, tablet PC, MP3, MP4 players etc mainstream product in the market. Specifications: Material: Plastic+Rubber Color: Black Length: about 35-80cm/13.7-31.4inch Earphone type: In ear earbud Wearing way: In ear style Plug-diameter: 3.5mm Plug-type: L-bend type Whether wireless headphones: wired-headphone Impedance-range: up to 32 Frequency response-range: 20-20000Hz Sensitivity: 120dB Volume Control: No Control-button: No Microphone: No Note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Package includes: 1x or 2x Single Earphone(optional)