Feature: 1. Clear Communication Anywhere: This motorcycle helmet BT intercom allows riders to communicate with each other up to a distance of 1000 meters, ensuring clear and uninterrupted communication while on the road 2. Multi-functional: Not only does this intercom system provide full-duplex communication for two people, but it also allows users to answer phone calls, listen to music, tune in to FM radio, and receive GPS navigation voice prompts 3. Long-lasting Battery Life: With its built-in 900mAh lithium battery, this helmet intercom can support up to 28 hours of continuous intercom or phone call usage, 33 hours of music playback, and can be fully charged within 2 hours 4. Share Your Music: The music sharing feature of this intercom system allows both riders to enjoy their favorite tunes simultaneously, enhancing the riding experience and creating a bond between riders 5. Designed for All Weather Conditions: With its IP65 waterproof rating, this motorcycle helmet intercom is designed to withstand any weather condition, ensuring durability and reliability even in rainy or dusty environments Specification: BT Version: 5.1BT Profiles: Supports A2DP, AVRCPSignal Frequency Range: 2.402GHz-2.480GHzIntercom Wireless Transmission Range: about 1000m (ideal environment)BT Transmission Distance: about 10m (ideal environment)Working Temperature: 5°C~40°CBattery: 900mAh rechargeable polymer battery (Single)Calling/Intercom Time: about 28 hoursMusic Playing Time: about 33 hoursStandby Time: about 500 hoursCharging Time: about 2 hoursCharging Voltage: DC 5V 1AInterface: Type-CWaterproof Level: IP65Horn Diameter: 40mmMaterial: ABS, Acrylic, SiliconeQuantity: 1 Pack, 2 Packs (Optional) Color: Black, Carbon Fiber (Optional)Product Size: Approx. 10.4*5.3*2.4cm/4.09*2.08*0.94in (Single)Product Weight: Approx. 53g/1.87oz (Single)Package Size: Approx. 17.4*13.5*4.6cm/6.85*5.31*1.81inPackage Weight: Approx. 384g/13.54oz Package List: 1 * Helmet Intercom1 * Pair of Headset&Microphone1 * Soft Microphone4 * Adhesive Earphone Stickers2 * Soft Mic Stickers2 * Hard Mic Stickers2 * Clamp2 * Clamp Sticker2 * Screws1 * Screw Driver1 * Charging Cable1 * User Manual (English)