Made of premium material with fine workmanship, it is water-proof and dust-proof. External programming port is easy to connect to the program card when setting the ESC. The SET one-key setting button on the ESC can easily reset all parameters to the factory default settings. Proportional brake with 4 steps of maximum brake force adjustment and 8 steps of drag brake force adjustment. 9 steps of acceleration adjustment from soft to very aggressive to fit for different kinds of models, tires and tracks. Compatible with the optional device-the portable digital LED program card, it is especially convenient for outdoor use. RC program card is multi-protection, low-voltage cut-off protection, overheat protection, throttle signal loss, motor lock protection. Item Name: RC Program Card Features: Waterproof, Dustproof, Easy to use, Multiple Protections Size: 8.1cm x 5.5cm x 1.2cm/3.19" x 2.17" x 0.47" (Approx.) Notes: Please uninstall the cooling fan before using this ESC in water, clean and dry it soon after use to prevent the connector from rusting. Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x RC Program Card