Features: Specially designed to fit for MIUI, XIAOMI 1s walkie talkie, etc. PTT(Push To Talk) key: the earpiece fits snugly in your ear easily, keeps your conversations private, and you can speak at any time. Stable signal transmission. You can listen clearly in any loud environment. Professional audio-visual, cut off the noise, the sound quality is fidelity. Soft plastic earplugs, transparent sound tubes fit the ears. Flexible, to prevent twisting, durable. Compared with directly using the mobile phone, radiation is reduced by more than 1000 times. The monaural headset is more convenient to use during driving and sporting. Specification: Item Type: Headsets Material: ABS Item Color: Black Socket: 3.5 mm Package Include: 1 * Walkie-talkie Headsets 1 * Replacement Earplugs