BYZ K17 Ceramic Wearproof Rock Bass In-Ear Headset Specification: Brand Name: BYZ Model: K17 Cable length: 120cm Communication: Wired Color: Black, White Frequency range: 20-20,000HZ Sensitivity: 93±3dB Cross Weight: 60g Features: Intelligent control, Noise Cancelling Mic, Anti-noise High Sound Quality Creative cavity design. The brilliant combination of ceramics and element. Being adjusted by professional tuner. We confirm that each earphone will be tested before selling. Ceramic makes pleasant sound, for which it's used for instruments since ancent China. High resilience PET meterials for lines. Expansive sound range. Package Included: 1 x BYZ-K17 3.5mm Headset