Features： 1、This product has double‑sided tape, which can be firmly fixed on the car body, can be pasted on the outside or inside of the car window. 2、Used to enhance the radio signal in the car to make the sound quality clearer. Universal for all models. 3、The active antenna has a built‑in radio frequency amplifier, the receiving capacity is 4 times that of the passive antenna. 4、Frequency is VHF / UHF, gain is 20dB, standing vave ratio is <1.0:1, impedance is 75Ω, supply voltage is 5V. 5、Made of high quality material, safe and stable, durable for use. Easy to install, convenient and practical. Specification： Condition: 100% Brand New Item Type: Car Antenna Material: Soft PC Applicable Models: Universal Cable Length: Approx. 300cm / 118.1in Frequency: VHF / UHF Gain: 20dB Standing Wave Ratio: <1.0:1 Impedance: 75Ω Size: As Shown in the Pictures Usage: 1. The antenna connector corresponds to the receiver interface. 2. Search the channel after completion. Package List： 1 x Antenna