Wireless Helmet Bluetooth Handsfree 1.Bluetooth V2.0, Class 2 (up to 10 meters, Auto Bluetooth Connection). 2.Bluetooth Device able support A2DP 3.Making and answering and ending call (Full Duplex) 4.LED lighting display 5.Water Resistance 6.Usage time with battery: 4 hours 7.Housing: ABS material 8. Able to remove the unit without any trouble, and recharge at home Twinpro International Holdings Limited,is the best solution to your needs for wireless communication products,bluetooth products. Our engineer with over 10 years of developing experience. Twinpro has the expertise and experience in providing ODM products and services. Our ODM service includes Research and Development, Product Design, Engineering Expertise and Manufacturing of the actual products. With a diverse and experienced group of industrial designers, engineers and product managers, we provide strategic solutions to a wide range of product development needs. Twinpro's mission facilitates reduced tooling, labor and manufacturing costs, quick delivery to market, and above all, client satisfication. At the same time, we have some open items products for your choose, if you are interested, please contact with us!