Bluedio S2 Bluetooth Sports Headset - Retail Packaging - Black 1.Superb and clear bass resonance: Special speaker transmits high fidelity and detailed wireless sound to your ears. 2.CVC wind noise reduction: Remove unwanted noise during a hands free conversation, cleaning the audio for far-end listener. It detects and tackle winds of various intensities and durations.(this is not active noise cancellation) 3.Redesigned 3rd generation silicone ear buds: Superior sound isolation by including silicone ear piece, ergonomically designed to provide comfort in your ear. 4. Sweat-proof: Effectively prevent sweat and rain interfere with headset operation. 5.Multipoint pairing and voice command: Connect to 2 mobile phones simultaneously. Say "Yes" or "No" to pick or reject call, add convenience to your life.