Detailed Description  Introduction Connects your music phone to your car or home stereo easily over FM radio waves. Handsfree talk function offer you more safety during driving. Features * High fidelity, stereo.  * Digital PLL, transmission is stable in different environment.  * Full frequency range.  * Memory for last frequency.  * Mutes the music and switches to talk mode during calls.  * Hands free talk via high quality built-in stereo microphone and the car stereo.  * Powered by the car's power source. Specifications=30dB  * Operating current: 20+/-3mA  * Frequencies: 87.9MHz~107.9MHz (interval 0.1MHz)  * Operation range: 3-10 meters  * Dimensions: D32 x W40 x H11 (mm)  * Accessory: car adapter - Mini USB 5pin, input 12-24V 150mA, output 5V 50mA  * N.W.: 10g (Product) 32g (Car adapter)  * G.W.: 82g  * Packing: PET box D187 x W113 x H27 (mm) Compatible with Dopod/ O2/ HTC/ i-mate 11pin: dopod 838 pro/ CHT9000, O2 Xda Trion, HTC TyTN etc. Use Means * Connect the FM transmitter to your mobile / PDA, connect the FM transmitter to the mini USB car adapter, plug the adapter into the car's cigarette lighter.  * Tune into an unused (blank) frequency channel of the receiver and adjust the volume of the receiver.  * Press UP or DOWN button to adjust the frequency of the FM Transmitter according to the receiver.  * Play the music of your mobile / PDA, enjoy it through the car stereo.  * It will automatically mute the music and switch to talk mode during calls and resume playing music after calls. You can talk hands free via built-in stereo microphone and the car stereo.  * You can also use the handsfree function when you make a call.  * For optimal voice clarity, distance of 30 to 60cm between the user's mouth and the microphone is advised. If distortion or significant noise happens, please tune down the volume of mobile phone and tune up the radio.