Built-in cooling fan When the power exceeds 250mW, the fan starts automatically and the speed is constant without worrying about heating problems (the 1W version has a heat sink and can work for a long time). Multicolor LED lights Reactor style shape with built-in multi-color LED lights, color adjustable default Cyan (cyan blue), multiple light colors optional. The compact and design makes it ideal for RC models, enhancing your flying experience without adding bulk. Upgrade your remote control system with the for ELRS Nano TX Module for a seamless and extended range operation. model:1W version 2.4GHz Data refresh rate:50Hz/150Hz 250Hz/500Hz output power:25mW/50mW/100mW 250mW/500mW/1W frequency band:2.4GHz ISM (The product appearance and printed words depending on the batch, but this does not affect use) Color: As Shown Material: ABS Package Contents: 1 x TX Module 1 x antenna (random color,Specified color is not accepted) 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.