1 Bluetooth 3.0 professional chip
2. 1200m Bluetooth actual intercom distance, 3 people switch intercom in pairs
3. HD binaural headphones, stereo music
4. Professional waterproof, windproof, high power, support A2DP EDR
5. Answer calls automatically
6.FM radio function
7.650 mAh lithium battery
8. Standby for 300 hours
9. Work more than 12 hours 10. Intercom with similar products of other brands
11. Connect 3 Bluetooth devices at the same time

Specification:
Bluetooth power: class one
Transmitting power: 21dbm
Receiving sensitivity: -83dbm
Support Bluetooth protocol: A2DP, AVRCP, HSP / HFP, AGHSP, PRIVATE INTERCOM
Battery capacity: 650mah
Talk time: 12 hours
Charging time: 2.5 hours
Battery type: lithium polymer battery
Standby time: 350 hours
Maximum ideal communication distance: 1200 meters (varies according to the actual test environment)
Maximum number of people: 3 people switch intercom
Radio frequency band:
Japan: 76M ~ 91M
General: 87M ~ 108M
Host weight: 47g
Host size: 85 * 42 * 23 mm
Certification: FCC, CE, TELEC
Audio: Noise Reduction Power
Volume Adjuster
Built-in stereo decoder
Maximum sampling 48khz
Antenna: built-in
Speaker impedance: 32 ohms
Frequency response: 20HZ-16KHZ

Package included:
1 x Helmet Intercom
1 x Bluetooth Headset
1 x USB cable
1 x Clip Mounting Bracket
1 x User manual