Transmitter: 1500MW (1.5G) wireless audio and video transmitter Weight: 82g Volume:73x41X14MM Input voltage: DC12V Current consumption: 400MA Working frequency band: 1.4G/1.5G/1.6G Available channels: Channel 12 Output power:1500MW Transmission distance: 2km in open space with zero obstruction and zero interference (perfect state). The actual distance is subject to actual operation measurement. Receiver: 1.5G wireless audio and video transmission Available channels: Channel 12 Working voltage: 12V Working current: 250mA Due to different batches, the appearance, color and printed words of the product , which will not affect the use. Colour:Blue Material:Metal Package Contents: 1x VTX 1x VRX 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.