Bluetooth Headset Communication System: Using full-duplex call, this two-way Bluetooth headset supports any 2 paired riders to talk at the same time within a maximum range of 1200 meters (straight line unobstructed)Bluetooth Pairing: This headset allows for easy pairing of up to 6 riders, including a host and 5 subsLarge 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 hoursPowerful Features: After pairing with your phone via Bluetooth, this motorcycle Bluetooth headset will automatically answer calls after 3 seconds, you can also listen to GPS navigation or listen to music while ridingESP Noise Reduction: With improved noise cancellation technology, it supports A2DP high-quality stereo sound, which helps reduce annoying noise caused by wind, engine and surroundingsWaterproof: Protects against fog, rain and sweat immersion Specifications: Bluetooth Version: 5.0Chip: BC 5Battery capacity: 850mAhCharge and discharge times: 500Operating voltage: 3.3V-4.2VTalk time: 24HStandby time: 240HCharging time: 2.5HSpeaker power: 0.25WWaterproof level: 5 levelsOperating temperature range: -10-45Charging method: USB charging Package included: 1 x Host 1 x Earphone 2 x Fastener Tape 1 x Clip 2 x Screws 1 x Screwdriver 1 x Charging Cable 1 x English and Chiese User Manual