Item Type: Helmet BT HeadsetMaterial: ABSModel: BT11BColor: BlackBattery Type: Built in 1000mAh Lithium Battery (Included)BT Version: 5.0 with EDRFrequency: 2.402-2.480GHzBT Range: Approx. 20-30m / 65.6-98.4ftPackage List1 x Helmet BT Headset1 x Charging Cable1 x Instruction Manual1[BT 5.0 Technology] Motorcycle helmet headset using BT 5.0 technology standard, stable transmission, 20 to 30 meters coverage, with faster speed and lower power consumption. 2[Automatic Answering] Helmet BT headset with microphone, answer the phone without taking out the phone, automatically answer the call, safer and more convenient. 3[Multi Functional Keys] 3 keys designed on the microphone of the wireless helmet headphone, more convenient operation, providing simple music control and dialing. 4[Long Battery Life] BT helmet headphone with built in 1000mAh rechargeable lithium ion battery with long standby time to provide you with longer working time. 5[Noise Reduction] This motorcycle helmet headphone has built in noise cancellation technology, presenting high definition stereo sound effect and clear calls with one click. 6[Multi Application] Small and simple helmet headset, easy to install, with a comfortable hand feel lacquered shell. Suitable for motorcycle riding, skiing, climbing, etc.