RNG brand R9S motorcycle helmet Bluetooth headset long battery life waterproof and dustproof RGB color external Bluetooth headset

use:With helmet
product name:Helmet bluetooth headset
size:Hard wheat [suitable for 3/4, half helmet, face helmet]
model:BY-R9S
Specification:RGB colorful external version [waterproof and dustproof]
Whether to provide exclusive supply for cross-border exports:yes