Features: Full-duplex Bluetooth real-time intercom: Super high sound quality, even when driving at 150km\h, you can clearly answer the phone and intercom. Long-distance intercom: Support multi-person intercom, the distance is up to 1.5km, so you will not be boring on the road. Fashionable appearance: The new appearance design, and your helmet naturally blend into one. Excellent sound quality: This intercom has a high sound quality effect, which can effectively reduce wind noise and improve the experience of answering calls while driving. Super long battery life: 2.5 hours of charging, able to talk for 30 hours, standby 500 hours. IP65 deep waterproof: No fear of dust and rain, giving the internal parts double protection. Specifications: Brand: Teleheer Model: T6 Plus Color: black\silver(optional) Material: ABS Bluetooth Version: 5.1 Intercom distance: 900M ,1500M The longest distance of Bluetooth link: 50 meters Support Bluetooth protocol: A2DP,AVRCP,HS\HF Interface: Type-C Battery capacity: 850mAh Battery type: polymer lithium ion battery Talk time: 30H Standby time: 500H Charging time: 2.5H Charging voltage: 5V Horn diameter: 40mm Signal frequency range: 2.402GHZ-2.480GHZ Waterproof level: IP65 Operating temperature range: -40-60 Product size: 10.1 * 5.4 * 2cm Package size: 16 * 9.7 * 7.4cm Package weight: 246g Package List: 1 * Headset 1 * Clip 1 * Screw Bag 1 * Screwdriver 2 * Fastener Tape 1 * Charging Cable 1 * Instruction Manual