Perfect motorcycle helmet stereo headset when driving.

Features:
Durable and lightweight.
3.5mm jack-plug， fit for all kinds of phone， MP3 player， and other music device.
With sticker design， can be easily installed on the inside of helmet， convenient and comfortable.
Adjustable microphone， make telephone calls anywhere anytime.
Volume controller makes you use more easily.

Specifications:
Color: Black
Compatible: 3.5mm jack-plug， all kinds of digital device
Earphone diameter: approx. 3.7cm
Cable length: approx. 1.2m
Earphone/MIC sensitivity:-58Ddb±3db
Earphone impedance: 32Ω±15%
Frequency response range: 20-20Khz
Package Size: 13 * 9 * 3cm / 5.1 * 3.5 * 1.2in
Package Weight: 41g / 1.5oz

Package List:
1 * Helmet Earphone