The Runner 250-Z-21 TX5817(CE) Transmitter for Walkera Runner 250 will be a power addition to FPV piloting as well as aerial photography. Featuring excellent anti-interference ability? it has a fast and stable signal transmission as well as a long transmission distance. Compact size saves mounting space while its lightweight body won't add extra burden. Made of high-grade materials? it is highly reliable and durable for long-term use. Don't hesitate to get one! You won't regret it!                                    Features             Powerful addition to FPV piloting as well as aerial photography<br> Excellent anti-interference ability<br> Fast and stable signal transmission<br> Long transmission distance<br> Stable performance? high quality<br> Easy to install <br>                                                            Specifications             Model     Runner 250-Z-21    <br> Suitable for     Walkera Runner 250    <br> Color     Black    <br> Dimensions     (5.51 x 2.76 x 1.57)" / (14 x 7 x 4)cm (L x W x H)    <br> Weight     1.76oz / 50g       <br>                                                             Package Includes            1 x TX5817(CE) Transmitter<br>