the function of intercom, telephone, music, and FM radio during riding. Riders now can have a clear, safe and comfortable experience in the journey. This Motorcycle BT Headset and Intercom is perfectly suitable for motorcycle riders. 800m Talking Range: The intercom transmission distance between two riders is up to 800 meters. Support 2 motorcycle riders to talk to each other at the same time. BT5.0 Technology: BT5.0 ensures ultra-low power consumption, fast palring, long working and standby time. Excellent CVC and DSP noise reduction effect makes the conversation clearer.   700mAh Rechargeable Battery: Lasts up to 18 hours of talking time, 300 hours of standby time per charge cycle. Charging time is about 2 hours. Fashionable Appearance: The new appearance intercom and your helmet naturally blend into one. IP65 waterproof and dustproof, no fear of dust and rain. Specifications: BT Version: 5.0 BT Profiles: Supports A2DP, AVRCP Signal Frequency Range: 2.4GHz Intercom Wireless Transmission Range: about 800m (ideal environment) BT Transmission Distance: about 10m (ideal environment) Working Temperature: 5~40°C Battery: 700mAh rechargeable polymer battery (Single) Talking Time: about 18 hours Standby Time: about 300 hours Charging Time: about 2 hours Charging Voltage: DC 5V 1A Interface: Type-C Waterproof Level: IP65 Horn Diameter: 40mm Material: ABS, Acrylic, Silicone Color: Black Product Size: 8.3*4.7*2.5cm/3.26*1.85*0.98in (Single) Product Weight: 47g/1.65oz (Single) Package Size: 18.3*10.8*5.0cm/7.20*4.25*1.96in Package Weight: 258g/9.10oz Package List: 1 * Helmet Intercom 1 * Pair of Headset (with Microphone) 4 * Adhesive Earphone Pads 1 * Clip 1 * Screw Driver 1 * Charging Cable 1 * User Manual (English)