Features: 100% 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. Suitable for most types of motorcycle helmet. Bluetooth-compatible headphone only,other accessories demo in the picture is not included! Package Includes: 1x Wireless Headset 1x Charging Cable 1x Fixing Clips 1x Screw Pack 1x Manual Specifications: Material:ABS Color:Black Cable Length:530mm/20.87in Size more details,please check the picture. Bluetooth-compatible Version: 5.0 Battery Capacity:250mAh Playing Time:About 15Hours Operating Range: up to 33 feet (10 meters accessibility) BT Agreement:A2DP. L2CAP. HFP. AVRCP. AVDTP. AVCTP 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.