Features 1.V4.0 Bluetooth Fm transmitter, a stable Bluetooth and FM connection to transmit music directly from the phone to the car audio system, this car Bluetooth transmitter will make your driving safer without having to check the screen frequently. 2.This car fm transmitter Bluetooth is compatible with most smart phones and more Bluetooth equipped devices. The Bluetooth car adapter provides a stable and reliable connection to meet the multi purpose and practical needs of users. 3.It has a built in microphone, which automatically switches from music playing state to hands free mode when answering a call, one key answer/reject/raise hand/recall, allowing you to focus more on driving without distracting operation, safe and convenient. 4.Crystal clear music streaming, with anti interference performance of the car Bluetooth fm transmitter, can automatically connect and remember the pairing when power on, the connection is more convenient and the operation is simple. 5.With a wider range and compatibility, this Bluetooth car radio transmitter is suitable for BlackBerry for Sony, tablet computers and other Bluetooth enabled devices. In addition, our Bluetooth transmitter has a wider range, from 87.5MHz‑108 MHz. Specification Item Type: Car Bluetooth MP3 Player Material: Flame Retardant ABS FM Transmission Frequency: 87.5-108.0Mhz Bluetooth Version: V4.0 Bluetooth Transmission Distance: Approx. 10m / 32.8ft Function: Car Mp3 Scope of Application: Car Bluetooth Sound Processing with A2DP Package List 1 x Car Bluetooth Transmitter 1 x Audio Line 1 x Dual USB Port Car Charger 1 x Magnetic Label 1 x Manual