bluetooth headphone is a kind of technology aggregation. K1 is a multipurpose headset of soulmate series, for enjoy wireless music ""connect"" with your soul. Crystal black and white design of k 1. Sound isolation by including silicone ear piece, ergonomically designed to provide comfort in your ear. You can connect 2. mobile phones simultaneously wirelessly, working as a bt receiver connect your phone with amplifier. It you more details, range and bass as well as perfect noise isolation.Say goodbye to the traditional wired music way. Enjoy your calls and intelligent voice command recognition smart life.Ultra-long standby time one-button operation, easy to operate bluetooth v4.0 + edr for hands phone calls, enhance driving safety designed for users to enjoy wireless communication really looks cool once you get one it's also a perfect for family or friends.Wearing styles ear / stealth headphones patented productBluetooth version v4.0, efficient transmission speedCompact, ultra light design stereo bluetooth headset, portable and easy to carry, support wechat, qq voice calls, movie, long battery life, fast charging.