Abusun V4.1 Stereo Wireless Sports Bluetooth Earphones HD Sweatproof Bluetooth Headset Earbuds for iPhone Sony HTC (Golden) Latest Bluetooth 4.1 Technology: can connect two devices simultaneously, and makes higher data transmission efficiency, lower power consumption, more stable signal. Perfect HD Crystal Clear Stereo Sound: HiFi stereo speaker provides a high quality wireless music experience. CVC6.0 Noise cancellation technology, give you a high quality, hands-free phone conversation. Independent Battery Pack: No radiation, no ear pressure: impressive 12 hours of wireless listening time per charge. Circuit and earbuds split design, comfortable to use. Comfortable and Environmentally Friendly Materials: Noise Cancelling Earbud With Mic for Hands free Calling. Ceramic antenna, make the connection more stable.TPE safety materials, soft, comfortable, texture and not wound. Intelligent Voice Prompts: Supports Easy Magnetic earpiece storage, Noise reduction, & Echo cancellation. Large buttons, simple and practical, intelligent voice prompts, technology senseof LED lights, suction metal earbuds shell.