Sunnice Mini Lightweight Wireless Stereo Sports/running & Gym/exercise Bluetooth Earbuds Headphones Headsets W/microphone for Iphone 5s 5c 4s 4, Ipad 2 3 4 New Ipad, Ipod, Android, Samsung Galaxy, Smart Phones Bluetooth Devices-in (Red) The beautiful and light neckband design.There is magnets inside the headset.So they can be adsorbed together The 9MM diameter drive unit + The bullet in ear design Use high elastic soft material as beam.This will not hurt your head Double damping balance technique, let the sound perfect 3D roller press, let you use freely