Basic function 1) 48 channels, 4 frequency band wireless receiving. 2) Two buttons for channel and band exchange individually. 3) Twonumber display, timely locate the current receiving frequency and band 4) When power on, storage memory shows channel and frequency of the last time. 5) Two-way video and audio signal output ( video: PAL, NTSC,CECAM ; Audio: 6.5MHz) 6) 5dB sensitivity gain more than normal receivers 7) Wide supply ( 7-12v ) Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. color:As shown Material:Metal+plastic Package Contents: 1 set x image transmission receiver 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.