Product Description Lencent Bluetooth Fm Transmitter - Provides Intelligent, Safer And Better Driving Style. Easy To Set Up Plug This Fm Transmitter Into The Cigarette Lighter Socket. Adjust The Same Free Frequency (87.5-108.0 Mhz) For Transmitter And Car Radio. Example: Set Both To 89 Mhz. Connect The Pairing Name "T25" Via The Bluetooth Menu List Of Your Mobile Phone, Ipad Or Other Bluetooth Devices. You Can Then Enjoy The Phone Music And Hands-Free Calling In Your Car. Please Note: Make Sure That The Fm Frequency You Select Is Empty And There Is No Signal For The Local Radio Station. Make Sure You Have Set The Frequency Of The Fm Transmitter Exactly As With Your Car Radio. Make Sure That The Device Is Well Plugged In The Cigarette Lighter. If Something Slips Out, There Can Also Be Noise Interference. Read More Read More Read More Read More Hands-Free Calling Answer / Redial / Reject Or End A Call, Simply Click On A Button. High-Performance Microphone With Noise Cancellation (Cvc) Technology And Echo Cancellation Gives You Crystal Clear Calls. Switches Seamlessly Between Incoming Calls And Music. Navigation Programme With This Bluetooth Fm Transmitter, You Can Get Clear Voice Navigation From The App Of Your Mobile Phone. It Will Adjust The Volume For Navigation When Playing Music. No More Hassle But Full Of Exploration On Your Journey. Car Battery Voltage Detection It Is Equipped With A Voltmeter To Show You The Condition Of Your Car Battery. The Voltage Should Be Between 13.2V And 14.7V When Your Car Is On And Moving. 12.2 V To 12.8 V When Your Car Is Parked And The Ignition Is Switched Off. Read More