Sound Signature Wireless Bluetooth Headset Headphones Earbuds Earphones Stereo 4.1 Sport Call Smartphone Running Microphone Extended Battery Custom Color Comfortable Lightweight 15 Grams Gym Designed by A.I. Our Wireless Bluetooth Headset prevents tangling with a Flat Wire Cable, necessary while running. Crisp stereo sound channels through the Earbuds thanks to Bluetooth 4.1 built in the headphones. "Multi-Point" System allows the Wireless Bluetooth Headset to pair with 2 devices simultaneously. Lightweight Sport Earphones weighs only 15 Grams, essential for long music and call duration. Eartips and Toggle controls with mic are separated to reduce ear weight on the Wireless Bluetooth Headset.