Motorcycle BT Headset, Motorcycle Helmet Intercom, BT5.0 Connection Waterproof Intercom Connected Intelligent Noise Reduction, Auto Answer, FM Radio Long Battery Life for Worry-Free Riding Features: Advanced BT 5.0 technology: Provides a wider coverage range, faster speed, and lower power consumption, ensuring stable communication connections. Intercom connection: Can be connected with the intercom, convenient for communication during team riding. FM radio function: Real-time control of road conditions, improving riding safety. Long standby time: 450mAh battery, only 2 hours to fully charge, standby time up to 360 hours, talk time up to 10 hours. Automatic answering: No need for manual while riding, automatically answer calls, ensuring riding safety. Noise reduction function: Effectively identify and reduce environmental noise, making the call sound clearer. Specification: Color: Black Material: ABS BT Version: 5.0 Frequency Range: 2.402GHz~2.480GHz BT distance: 20~30m (varies by mobile phone and environment) Microphone distance: ≤1m Li-ion battery capacity: 3.7V/450mAh Charging voltage: 5V Charging current: 500mA Static current: 0μA Charging time: about 2 hours Standby time: approx. 360 hours Operating time: approx. 18 hours Low battery alert voltage: 3.3V Low Power Off Voltage: 3.15V Low battery alert time: 4 minutes Receiving frequency low end: 76.2 Package size: 171*116*50mm Package weight: 228.4g Package list: 1* Host 1* Speaker Kit 1* Stick Microphone 1* Concealed Microphone 1* Microphone Extension Cable 1* Charging Cable 1* Metal Headphone Clip 1* Instruction manual 1* Magic Stickers