The T9 Halter neck wireless stereo is a modification of the purpler Zealot
B9+. It has a unique design of One-side button (Backward/fast
forward/volume+/-) all centered at the right-hand side of it. This makes it
easier for users. The halter necklace headset is a supra-aural in-ear
Bluetooth headphone, you will feel comfortable wearing it.The most
important is the B9+ is compatible with all smartphone, laptop.