STURDY CONSTRUCTION: Utilizes high grade aluminum alloy for excellent stability and low fan noise, providing outstanding heat dissipation and stable transfer of high definition sound. MICROPHONE VOLUME CONTROL: Equipped with a 3.5mm microphone sound jack for flexible interface control, allowing simultaneous use of microphone with any for better functionality control. WIDE APPLICATION: Suitable for outdoor cinemas, churches, parks, schools, factories, hotels, festival light shows, homes, and parking lots, to meet your needs to use perfectly. HIGH PERFORMANCE: DC12V voltage, less than 0.3A operating current, frequency range of 76‑108MHz, PLL frequency synthesis for stable transfer, and stereo separation of ‑50dB. Item Type: FM Stereo Transmitter Working Current: Less than 0.3A Frequency Range: 76-108MHz Frequency Step Value: 100kHz Frequency Stabilization Mode: PLL frequency synthesis Sound Distortion: Less than 2% Modulation Degree: 15% Input Level: -15dBV (Adjustable) Output Impedance: 50Ω Output Power: 5W (The product printed words depending on the batch, but this does not affect use) Colour:As Shown Material:Aluminum Alloy Package Contents: 1 x Stereo FM Transmitter kits Only the above package content, other products are not included. Note: Light reflection 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.