Features: brand new and high quality Bluetooth-compatible 5.0 provides instant pairing and stable transmission without interruptions. Using upgraded dynamic coil speakers to enhance the sense of depth, presence and space, and present a three-dimensional surround effect like a live scene. Connect to bluetooth-compatible function equipments,handfree phone call. IP65 water resistant,anti-spray . Intercom function: two-person intercom, AI vocal learning, effectively noise cancelling, improve call quality; safe riding and call without wind noise; communication distance 500m. Calling function: answer calls, make calls, support intelligent voice control. Bluetooth-compatible headphone only,other accessories demo in the picture is not included! Specifications: Material:ABS Color:Black Bluetooth-compatible Version: 5.0 Battery Capacity:1400mAh Calling Time:About 20Hours Standby:About 600Hours Operating Range: up to 33feet (10 meters accessibility) Charging Time:3Hours IP65 Waterproof Working Voltage: 3.0V-4.2V Speaker Power: Rated Power Input 20MW, Max Power Input 30MW Working Temperature Range: -30 to +60 (mini and max working temperature) Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Headphone 1xType-C Cable