ESTONE BT70 Bluetooth FM Transmitter 1.7" LCD Dual USB Car Charger QC3.0 TF Card AUX Black

What this device does

The ESTONE BT70 is a Bluetooth FM transmitter that plugs into a 12-24 V vehicle socket. It streams audio from a paired phone or tablet to the car radio on an unused FM frequency. A 1.7 inch LCD shows the song name, incoming call number and the vehicle battery voltage. Two USB ports provide a 2.4 A smart charge port and a QC 3.0 fast charge port for phones and tablets.

Who it suits and who it does not

Drivers who want wireless music and hands-free calls through an existing FM stereo will find the BT70 simple to set up. The rotating 270-degree gooseneck lets the screen face the driver in most dash layouts. Buyers who need a digital audio output such as optical or HDMI, or who require a built-in DAB+ tuner, should look at a different product because this unit only offers FM and 3.5 mm AUX connections.

Behaviour on long journeys

The BT70 runs from the vehicle electrical system, so it does not rely on an internal battery that could drain over time. CVC noise-cancellation technology keeps call clarity steady during extended drives. The transmitter can be switched off with a long press on the next-track button while the USB charging ports stay active. A TF card slot accepts FAT-formatted cards up to 32 GB for offline playback when a phone is not available.