Motorcycle Helmet BT Headset, Wireless Waterproof Noise Cancellation BT Helmet Intercom with Microphone Support Hands-Free Calls Helmet Headset for Ski ATV Dirt Bike The helmet intercom headset allows for easy and efficient wireless communication among multiple users, making it an ideal tool for activities, professional use, or specific work scenarios. The BT feature of the headset allows for quick and easy pairing with other devices, ensuring you stay connected without any hassle. With its superior waterproof design, the headset is built to withstand harsh conditions, making it a reliable choice for work or activities. This motorcycle helmet headset is more than just a communication device. It also offers audio playback, voice navigation, and hands-free calling, making it a versatile tool for all your audio needs in various scenarios. Say goodbye to background noise. With noise reduction technology, this BT headset ensures you enjoy clear communication, no matter where you are. Specifications: Item Name: Helmet BT Headset Operating Current: <30MA Main Material: ABS, Silicone Charging Time: Approximately 2.5 hours Phone Call Distance: 10M Main Functions: Intercom auto-reconnect, phone call, voice assistant, ambient light Size: 81*53*21mm Distortion: ≤0.01％ Standby Time: Approximately 260 hours Wireless Solution: BT 5.2 Microphone Impedance: 2.2K Speaker Impedance: 32Ω Charging Current: 470mA Audio Signal-to-Noise Ratio: ≥60db Standby Current: <3MA Supported BT Protocols: A2DP, AVRCP, HS/HF Supply Voltage: VDD3.8V Battery: 850mAh External Interface: Type-C Speaker Diameter: 40MM Sensitivity: -85db Intercom Wireless Transmission : 1000M Microphone Sensitivity: -38±3db Charging Voltage: 5V Speaker Response Frequency: 0-20KHz Temperature : -10~60℃ Microphone Diameter: 6.02.7 Chip: QCC3024 Transmission : 20db Working Time: Approximately 25 hours Frequency : 2.402GHZ-2.480GHZ Color: Black Package Information: Package Weight: 146g Package Size: 11.7*9.5*6cm Package List: 1 * User Manual 1 * Host 1 * Hook & Loop Kit 1 * Type-C Charging Cable 1 * Fixed Base 1 * Changeable Hard Mic and Soft Mic Speakers 1 * Sticker