Item size: 60 x 26 x 12mm, Packing size: 130 x 80.5 x 21mm.
Net weight: 20g, gross: 61g. HS: 8529906000.
Turning on your car radio and switching it to a frequency point, which one without radio frequency. Such as 88.1MHz.
Making FM transmitter insert into your phone or other audio equipment, which ones with 3.5mm audio slots. Meanwhile playing music on your phone.
After turning on the switch of the FM transmitter, the screen will show the transmitting frequency point, then switch it by the "up" and "down" buttons to the frequency point as same with your car radio frequency. And then enjoy your music as your wish.
The key of M prestores 4 frequency points (88.1MHz, 94.1MHz, 100.1MHz, 106.1MHz) for quickly connecting to your lovely music.