FPV Camera Sensor: 1/4 "CMOS Lens: M8 800TVL Lens Angle: 150 ° FOV horizontal viewing angle of 170 ° DFOV diagonal perspective Format: NTSC / PAL (switchable) Power consumption: 380mA @ 3 · 7V Power: 3.6-5.5V Lens Mirror Diameter: 2.1mm IR coated FOV150 (horizontal) Video Transmitter Support video format: NTSC / PAL Output Impedance: 75 Ohm Output signal strength: 23 ~ 24dBm Output Power: 25mW Wireless Channel: 40CH Antenna: RHCP circular polarization antenna Operating voltage: 3.6V ~ 5.5V Current: 100mA Audio carrier: 6.5MHz Button function Short (Apr. 1 sec or less): Change channels 1-8 Long (More than 1.5 sec): Change bands A-B-E-F-R Long + (More than 3 sec): Change NTSC/PAL system NTSC or PAL (selectable; Blue LED on= NTSC; Blue LED off=PAL) Feature: AIO FPV camera, transmitter , antenna all 3 functions in one limit size and weight 150 ° FOV horizontal viewing angle of 170 ° DFOV diagonal perspective Five bands 40 channels with Race band Color: Black Material: plastic Package Contents: Package Included: 2 X S4 AIO FPV Camera 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.