• Wireless Bluetooth headphone, connection distance for cell phone up to 10 meters
• It can realize direct full-duplex intercom between the Bluetooth helmet headset and the Bluetooth helmet headset up to 800-1000 meters
• It can answer calls, reject calls and hang up calls
• Support the last number redial function
• With FM radio function
• Enjoy cell phone music through A2DP or connect GPS
• Automatic switching between Bluetooth call, intercom, stereo music and FM radio
• With DSP echo suppression technology and noise suppression technology, clear voice quality of voice is guaranteed at a high speed
• Waterproof and sunproof button panel, durable to use
• Can connect MP3, GPS, mobile phone, walkie-talkie, etc. via audio cable

Specifications:

• Bluetooth version: 3.0 + EDR

• Frequency: 2.4 GHz

• Supports: A2DP and AVRCP

• Compatible Bluetooth profiles: Bluetooth headsets and hands-free profiles with automatic detection

• Operating range: up to 10m for cell phones

• Battery type: 450 mAh rechargeable lithium polymer

• Support: up to 300hrs

• Talk time: telephone up to 10 hours intercom up to 8 hours

• Charging time: 3 hours

• Power adapter: DC 5V 500ma

Note: 

• There is only one headset in the package. If you want to intercommunicate with other pilots, you need to buy 2 or 3 units. (Can support Max 3 units intercom)