Motorcycle Helmet Wireless Headset Bluetooth 4.0 Intercom [DISCONTINUED][WIRELESS MUSIC]: Wirelessly listen to to music with integrated bluetooth technology. Fashionable design, let music surround your life any time. [EASY TO USE]: Hands free function, truly free your hands when listening to music or answer phones. [LONG WORKING TIME]: Set in rechargeable Li ion battery, long stand by time up to 160 Hours and working time is up to 8 hours after fully charged. Supports power display on iPhone, easy to know when it need to

Operating temperature: -20 ~ +60 °C

1 x Speaker microphone

Safer & Larger Battery: To make the radio safer

Frequency: 144/430Mhz

It's an all-in-one multi functional speaker with modern style

- Maximum deviation: 5kHz (Wide) / <2

But one piece M1-Pro can intercom with one piece M1

The 12V Trigger In/Out allows the amplifier to be activated by other devices or to activate other electronics via a 3

GPSMAP298C Sounder (010-00507-00)

12 or 24hr switch

the battery died

25μV / ≤0