Shenzhen, Kwong Yuen Fung Ltd. Alibaba shop factory direct sales, to undertake the enterprise, industry, OEM / ODM orders! Receive domestic and foreign trade, custom gifts! LOGO can be printed and other customized services, the same price than quality, the same quality than price, our price advantage! Product Features: drive the process, easy to receive and make calls, to ensure traffic safety features: automatic identification of mobile phone, no cable or telephone line and mobile phone cradle can; the owner can not contact the phone, or even keep your hands on the steering wheel on, you can control your phone using voice commands to control to answer or make a call, users can make calls through the car stereo. Product Specifications: Bluetooth Version: 4.0 Bluetooth Operating Frequency: 2.4 - -4.8 ghz phones and handsfree connection distance: 0-10meters Working temperature: 10 - 70 ℃