Features: 1. CNC metal Cavity, ensure crisp quality. 2. Flat noodle cable,convenient to store and carry. 3. Medical grade earbud, noise isolating, fit comfortable. 4. Dynamic speaker with wide frequency response (20-20KHz). Specifications: General Specification Brand WALLYTECH Model W802I Color Black, White, Red, Blue, Pink Cable Length 1.35 m Wearing Type In-ear Technical Parameters Connectivity Wired control(Samsung, iPhone and part of smartphone) Conectivity Interface 3.5mm Rated \/ Max power 1\/5 mw Driver Unit 8.00 dynamic Receive Sensitivity 100dB Impedance 32ohms Frequency Response 20Hz ~20K Hz Package Included: 1 x WALLYTECH W802I Headphone with Mic 2 x Silicone Earmuffs