2.4 GHZ High Speed: 2.4 GHZ frequency controller supports multiple rc boats to synchronously! The max to 15 (30km/h) allow you blow other remote control boats out of the water! Perfect rc racing ship toys for Pool and Outdoor! Capsize Recovery Feature: Self- Hull Design gets the racing boat back to quickly while is capsizing . Auto-Corrects Yaw: Internal Navigation Rudder Design allows the rc boat correcting the yaw automatically which makes a easy sailing. Poor Signal Alarm: The transmitter of the rc boat will The ship's speed will plummet to make a return voyage or stop while the signal becomes poor. Low Battery Alarm: The controller will sound alarm to remind you of battery charging or replacing while the battery is in low power. size: about 32 x 9.5 x 5.5cm Material: plastic+metal colour: Black Package Contents: 1 x RC Racing Boat 1 x remote control (without 2XAA battery) 1 x Display stand 1 x charging cable 1 x body battery Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.