Check the listing for details. CZE-T251 25W FM transmitter stereo Professional broadcast adjustable 0-25W+Power. Color: Silver, Condition: New. Listed at 289.89 USD. Descriptions: Description: 100% New Functions： 215mm x 165mm x 54mm chassis Power up to 25.1 watts Using digital phase-locked loop frequency synthesizer (PLL) technology, ultra-high frequency stability. Have the standing wave protection, and overtemperature protection. Output power from 0 ~ 25W continuously adjustable Using the RF power lock feature how the timely output power and various working status. Electrical parameters: RF part: Operating frequency: 87.5 ~ 108MHz Output power: 0-25Watt (continuously adjustable) Output Impedance: 50 ohm Spurious and harmonic radiation:-60db Audio part: Frequency response: 50 ~ 15KHz (3db) Distortion: 0.2% Left and right channel separation: 45db LINE IN connector: RCA two-channel Cinch (stereo) The microphone interface: 6.5mm Microphone Type: Dynamic microphone (electret microphone is not applicable) Power supply part: Rated working voltage: DC 12~13.8V 5A/6A What in Package: 1 x 25W FM Transmitter 1 x 12V Power adapter