Produce feature : Receiving and Dial phone calls the new technology of car products, a new application of bluetooth technology. A clear statement in all countries over the world: it is restrict for using phone when driving, T2W handsfree bluetooth car kits pay attention to your health and safety. Three ways of receiving phone: A hands free, B Car audio, C wireless headphone Hands free and mobile can transfer automatically 1.Full duplex, noise and echo cancellation, DSP technology 2.Bluetooth specification: 1.2 3.Built-in microphone and loudspeaker. 4.Four pcs LCD nixietube display incoming caller's english name,The longest ID can display for 12bit, LCD status indication for different mode of operation it can store and edit English name for 250pcs 5.Voice dial & Redial. 6.Record important information during conversation. 7.Wireless headset, convenient for private conversation at anytime. 8.FM frequency selection key:select between 4 preset FM Frequencies(FM88.1 FM88.5 FM88.7 FM89.4) to tune in your CarAtereo and listen to your call. 9.USB port: for firmware upgrade only! 10.Easy Set up and Simple Operation 11.Modern & Elegant Design 12.Provides the best sound clarity with little or no distortion. (Superior Sound Quality) 13.1-year Manufacturer' s warranty Product specification: Bluetooth Specification: v1.2 Compliant,class 2 Bluetooth profile support: headset and handsfree profile Range of frequency: 2.4GHz Spectrum Input Power: 12-24VDC Dimension: 293x95x42mm Net Weight: 400g Operating temperature: -20 to +70 Package: 1) Hands free bluetooth car kits, 2) wireless headphone 3) Lithium battery 4) product manual Dimension&Weight: Inner Size: 33.7x15x5.8cm G.W: 794.3g/Box N.W: 379.2g/Box Carton&Size: 10box/Ctn,35x31.5x37cm G.W: 10KG/CTN N.W: 9.3KG/CTN