The WR200 transmitter packs 200mW of ultra clean 5.8g power in a micro sized AV transmitter. A must for those who save size and weight while still getting good performance. For this gadget, it is a perfect combination of premium material and wonderful performance. High-strength ABS shell is wear-resistant for long-term use. It features 32 channels, covering A, B, E and F bands. Due to the small size, it is easy for installation, no skill required. Also, there are LED indicators for showing working band and channel. Perfectly fit for XK X350 RC quadcopter photography!