UDI002 2.4G Wireless RC Boat Manual 1. This model includes a 390 magnetic motor drive system Lithium-ion battery, for speeds of up to 25KM/H. 2. The boat and transmitter take advantage of advanced 2.4GHz automatic code pairing technology to control the boat over long distances. 3. RC boat specifications: Length: 424mm Width: 114mm Height: 119mm 4. Special anti-tilt function prevents tilting and keeps the boat sailing. 5. Water-cooled motor extends the life of the boat. 6. Built-in left and right navigation rudders enhancing sailing stability. 7. Low-voltage alarm function: when the battery runs low, the transmitter will sound “Di, di, di”. This warns that you have about 1 minute left, so you can sail it back for retrieval. 8. Transmitter detects when 2.4G signal becomes weak and flashes an out-of-range light.