1. Reduce FM88-108MHz to 76-90MHz(All Channel Antenna), for the lower frequency of 76-90MHz car audio. 2. After adding this frequency antenna, through changing the frequency, the car audio can receive a much perfect frequency. 3. Reliable quality and safety, each unit is individually precisely tuned for desired band on appropriate RF test equipment. 4. With a for positive pole, black line for negative pole, convenient to install. 5. Suitable for most Japanese car radio, such as , , , , , . Frequency Range: Reduce FM88-108MHz to 76-90MHz(All Channel Antenna) Hole Diameter: 1.2cm or 0.47inch Size(W x H): 2.5 x 1.9cm or 0.98inch x 0.75inch Whole Length: 30.5cm or 12inch colour: black Material: ABS Package Contents: 1 x Car FM Band Expander 1 x Instruction Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.