HUSTON LOWELL Superb Cool Outdoor Sport G6 in-Ear Stereo Bluetooth 4.0 + EDR Headset Sweat-Proof Wireless Music Earphone Headphone Mic iPhone (Blue) Uses the renowned Stereo Bluetooth CSR8635 / 4.0 chip to ensure high-fidelity sound quality and stable performance. Built-in high-performance Microphone and Speaker, offering you HIFI sound effect(Perfect Sound Quality and clear communication effect.) Professional Sweat-proof Design, dont worry the headset is damaged during exercise. Support multipoint connections: Can simultaneously connect two smarts phone. And, it supports auto-reconnect. The Bluetooth headset uses stylish shape design and has beautiful streamline appearance. Enhanced Audio and Bass Response, Crisp Treble, Natural Alto, Deep Bass. Supports hands-free call, thoroughly set free you hands from answering the call during exercise. Flexible neck-strap, lightweight and comfortable and easy to carry and custody. Use for creative ergonomics design, comfortable to wear.