Excellent waterproof performance (IP67). Users can use it directly without any waterproof treatment. Note: If water enters during use, please blow-dry each plug to prevent rusting. The integrated Bluetooth function (built into the switch) allows for ESC settings and upgrades via the mobile app, without requiring additional devices, making it simpler and more convenient. Data logging functionality enables viewing of various running data through the HW LINK app. Supports firmware upgrades for the ESC, allowing access to the latest features.