Item features: -Size: 65mm/125mm/145mm/Unchargeable controller, receiver -This product requires a self-contained hull model, which belongs to the DIY modified remote control ship. R130 high speed strong magnetic carbon brush motor that the model hull use -Suggest use foam, plastic bottles, swimming kickboards as model boat shell -The receiving board has three operating frequencies: 27/40/49mHZ(leave message which you want, or we will send at random) -Remote control distance: affected by many factors of assembly conditions, the remote control distance assembled by most people is about 35-50 meters, and the speed is 15-20Km/ h. Scope of delivery: 1 SET KIT Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.