BT26 500m Intercom Motorcycle Helmet Bluetooth-Compatible Headset Waterproof Noise Cancelling Earphone 【500m Intercom Range】Advanced intercom functionality allows clear communication between riders up to 500 meters apart,enhancing group ride experiences. 【Universal Helmet Compatibility】Specially designed to fit both full-face and half helmets,ensuring a perfect integration with your existing motorcycle gear. 【Bluetooth-compatible 5.4 Technology】Utilizing the latest Bluetooth-compatible 5.4+EDR,this headset offers superior signal transmission,ultra-low power consumption,and compatibility with all Bluetooth-compatible devices. 【Auto-Answer Functionality】Featuring automatic call answering,allowing for hands-free operation to maintain safety while riding. 【Waterproof and Noise Reduction】Built to withstand various weather conditions with waterproof design,while noise reduction technology ensures clear audio even at high speeds. 【Enhanced Bass and Freeze Resistance】Delivers rich,low-frequency sound and is designed to operate efficiently in cold temperatures,ideal for all-season riding. Specifications: Bluetooth-compatible version: 5.4+EDR Frequency range: 2.402GHz-2.480GHZ Transmission distance: 15-15 meters (depending on the device) Microphone transmission distance: ≤1 meter Lithium battery: 3.7V/1000mAh Continuous working time: ≤20 hours Charging voltage: 5V Charging time: 3 hours Standby time: ≤80 hours Intercom distance: 500 meters Bluetooth-compatible name: BT26 Package included: 1 x Motorcycle Helmet Headset 1 x Spare Microphone Cap 1 x Pair of Sticker 1 x Charging Cable 1 x English User Manual 1 x Helmet Clip