1. Support 360-degree rotation，Increase product flexibility.
2. Adapter rail：Fully adaptable 19-21mm helmet rail.
3. Adjustable distance between earphone and ear, make you feel comfortable.
4. The bracket has accessory guide rails, which can be extended with other accessories, such as: expansion flashlight or infrared.
5. Three color for you choose.
Material: alloy + nylon
Color: as shown
Size: 15 * 9 * 4.5cm
Suitable for 19-21mm rail