Notice: V6plus motorcycle helmet headset supports 6 people group intercom !! The motorcycle helmet headset will be shipped in a box. Features: -Bluetooth Motorcycle helmet intercom with talking range up to 1500 meters -Big capacity battery, the 850mah battery prolongs the talk time and standby! -Full Duplex Wireless Bluetooth Handsfree intercom commnunicate -Up to Pair 6 Riders \u0026 Talk Between Any 2 of them at a time -Despite the plastic bracket clip, clip replacement is added to the V6 Plus accessories. -With Wind noise DSP cancellation, you could hear clearly at a speed up to 120km\/h -High quality batteries, 3 hours charge to full and Up to 8 hours talking time -With Stereo Bluetooth Headset, supports stereo music\/Audio navigation from GPS, Auto answer the call. -Ultrasonic integral molding, Better water resistance, could be used in all weather. -Hands free communication. you can pair with other 5 persons. -Suit for motorcycle helmet (Full-face \/ Half-face) -Works good with referee headset for football match(3-4pcs to make a referee group) Specifications: Product selling point: full duplex intercom, motorcycle intercom headset Number of teams: 6 Bluetooth version: 5.1 Chip: Chip Qualcomm 3024 Intercom distance: \u2265500 meters Intercom maximum distance: 1500 meters Maximum distance of Bluetooth link: 50 meters Battery capacity: 850mAh Battery Type: Polymer Lithium Ion Battery Battery cycle life: \u2265500 times (standard charge and discharge) Working voltage: 3.0V-4.2V Talk time: 25\uFF5E30H Standby time: 600H Charging time: 2.5H Radio frequency band: none RDS database: none Speaker power: Rated Power Input 20MW, Max Power Input 30MW Waterproof grade: IP65 (spray-proof type, directly affected by water spray in any direction without harmful effects) TTS language features: none With or without automatic volume adjustment: no Operating temperature range: -30\u00B0C to +60\u00B0C (minimum and maximum operating temperature) Charger specification: DC 5V 1A Package included: 1\/2 x V6 Plus Helmet Intercom 1\/2 x Bluetooth Headset 1\/2 x USB cable 1\/2 x Clip 1\/2 x Screwdriver 1\/2 x User manual