Feature: 1. BT headset communication system: Using full duplex call, this two-way BT headset supports any 2 paired riders to talk at the same time within a maximum range of 1200 meters (straight line unobstructed). 2. BT pairing: This headset allows for easy pairing of up to 6 riders, including a host and 5 subs. 3. Large battery capacity: With a large 850mAh rechargeable battery, only 2.5 hours of charging, the intercom can work up to 12 hours and standby time up to 240 hours. 4. Powerful features: After pairing with your phone via BT, this motorcycle BT headset will automatically answer calls after 3 seconds, you can also listen to GPS navigation or listen to music while riding. 5. ESP noise reduction: With improved noise cancellation technology, it supports A2DP high quality stereo sound, which helps reduce annoying noise caused by wind, engine and surroundings. 6. Waterproof: Protects against fog, rain and sweat immersion. Specification: Features: BT headset communication system: Using full duplex call, this two-way BT headset supports any 2 paired riders to talk at the same time within a maximum range of 1200 meters (straight line unobstructed). BT pairing: This headset allows for easy pairing of up to 6 riders, including a host and 5 subs. Large battery capacity: With a large 850mAh rechargeable battery, only 2.5 hours of charging, the intercom can work up to 12 hours and standby time up to 240 hours. Powerful features: After pairing with your phone via BT, this motorcycle BT headset will automatically answer calls after 3 seconds, you can also listen to GPS navigation or listen to music while riding. ESP noise reduction: With improved noise cancellation technology, it supports A2DP high quality stereo sound, which helps reduce annoying noise caused by wind, engine and surroundings. Waterproof: Protects against fog, rain and sweat immersion. Specifications: Color: black BT Version: 3.0 Chip: BC 5 Battery capacity: 850mA Charge and discharge times: 500 Operating voltage: 3.3V-4.2V Talk time: 24H Standby time：240H Charging time：2.5H Speaker power: 0.25W Waterproof level: 5 levels Operating temperature range: -10℃-45℃ Charging method: USB charging Package size: 22.5 * 10 * 6cm Package weight: 360g Package List: 2 * Host 2 * Earphone 4 * Fastener Tape 2 * Clip 4 * Screws 1 * Screwdriver 2 * Charging Cable 1 * Instruction Manual Package List: 2 * Host 2 * Earphone 4 * Fastener Tape 2 * Clip 4 * Screws 1 * Screwdriver 2 * Charging Cable 1 * Instruction Manual