1、HANDS FREE CALLING: This helmet Bluetooth headset offers you easy hands free communication while riding. With an auto answer function, incoming calls ring for 10 seconds without any action and are answered automatically. 2、HIGH QUALITY HEADSET: High quality motorcycle headphone for clearer stereo music, enjoy your drive. Water and dust resistant, can be used in all weather conditions 3、STABLE PERFORMANCE: Bluetooth 0, faster and safer, protects the device from damage, can be connected to an intercom, stable voice control and calls, switch songs at any time, navigation. 4、NOISE REDUCTION: The helmet Bluetooth headset's microphone uses DSP and sound modelling technology and has a CSR chip so the sound is clear and high quality when talking to other riders. 5、LONG STANDBY TIME: With a powerful 450 MAH battery, the helmet Bluetooth headset can stay in standby mode for a week, work for 18 hours and take only about 2 hours to fully charge. 1 x Bluetooth Host 1 x Microphone Headset (Battery Included)2 x Fixing Plate 1 x Right Angle Wrench 4 x Screws 1 x Manual Item Type: Motorcycle Helmet Bluetooth HeadsetMaterial: ABSModel: YZ06Colour: BlackScope of Application: For Devices with BluetoothInternal Battery: Polymer Lithium-ion Battery Battery Capacity: 450mAhBT Version: 5.0 Frequency Range: 2.402GHZ- 2.480GHZBT Distance: 20-30m/ 65.6- 98.4ft (Varies by Phone) Microphone Distance: ≤1m/ 3.3ft Charging Time: About 2 Hours Working Time: About 18 Hours Standby Time: About 360 Hours Low Battery Prompt Voltage: 3.3V Low Battery Shutdown Voltage: 3.15V Duration of Low Battery Alert: 4 Minutes Radio Frequency Low End: 76.2 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.