HD SOUND - 8mm Speakers combined with Bluetooth 4.1 create super accurate HD sound with powerful bass. The bullet-shaped provide Total Isolation from external noise.
SWEAT PROOF - Protected by Liquipel Nano Coating your Buds withstand sweaty workouts
MAGNETIC - Easily stow your Earbuds by wearing them around your neck. Instantly access your Earphones anytime without searching your pockets. Looks cool as well!
SECURE FIT - The patented winged earphone tips hold your Buds in place during rigorous workouts. Over- and Under-Ear fit options included.

Features:
Bluetooth 4.1 increases Battery Life dramatically while letting you travel further than ever before.
The Highest Audio Quality
The D9 uses the highest quality transducers and hardware, as well as Bluetooth 4.1, and stereo transfer protocols. That means bigger bass, lighter-than-air treble, and perfect phone call clarity EVERY time.
The Most Revolutionary Toughness
We designed the D9 so that it can withstand even the toughest environments. The earbuds are made from Aviation Grade Aluminum-Magnesium-Alloy which doesn’t add weight. (not for swimming)

Applicable to:
For Apple IOS iPhone 7/6/5/4/ iPad Series
For Android Phone
For Samsung/Sony/Motorola/Nokia/LG Phone Series
For Huawei/Xiaomi/Lenovo/Meizu/Oneplus/HTC/Letv Phone Series
For Most of Devices with Bluetooth ...