1、INTERCOM FUNCTION: With two person intercom function, allowing riders to share the fun of riding in real time and enjoy a more convenient use experience. 2、SMART VOICE WAKE UP ALGORITHM: Adopting the core sound smart voice wake up algorithm, it provides offline wake up and call noise reduction function. 3、HIFI SOUND QUALITY: Equipped with 40mm tuning speaker diaphragm, it can restore every track, making the music more infectious and the ride more enjoyable. 4、AUTO ANSWERING FUNCTION: Helmet headset is equipped with auto answering function, no need to operate manually while maintaining high definition call quality. 5、WATERPROOF DESIGN: The helmet headset adopts IP67 deep waterproof design, which can cope with all kinds of bad weather conditions, so that the cyclist can be fearless when riding in wind and rain. Item Type: Helmet Headset Material: ABS Bluetooth: 5.0 Usage Range: 300m / 984.3ft Frequency Range: 2.402-2.480GHz Supported Protocols: A2DP, HFP, HSP, VRCP, SPP Supported CODEC: SBS, AAC Charging Time: Approx. 2 Hours Charging Input: 5V DC ≥500mA Battery Type: Lithium Battery Battery Capacity: 900mAh (Built In) Rechargeable Battery Standby Time: 100 Hours Operating Temperature: -10-55℃ 1 x Clip 1 x Bluetooth Helmet Headset 2 x Light Bar 1 x Charging Cable 1 x Instruction Manual 1 x Microphone Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store