Product details?Magnet Metal Neck Hanging Sports Bluetooth Headset V4.2 Stereo? Running Sport Earphone With Mic For Mobile Phone Calls: Neck hanging With?Mini?Card Reader Slut and Suitable for all Bluetooth-connected devices, gel ear-buds isolate background noise, 100%? Tested. delivery Color:Black White Blue Red Gold, Blue.Magnet Metal Neck Hanging Sports Bluetooth Headset V4.2 Stereo Waterproof Running Sport Earphone With Mic For Mobile Phone Calls: Neck hanging With?Mini?Card Reader Slut and Suitable for all Bluetooth-connected devices, gel ear-buds isolate background noise, 100%? Tested. delivery Color:Black White Blue Red Gold, Blue.