Dolphin can set directional fixed distance in automatic navigation, and can preset the navigation distance from 100 meters to 300 meters (adjustment interval of 100 meters) on the remote control to realize automatic navigation and automatic bait drop. Dolphin can store 16 target bait distances. Rechargeable remote with built in antenna makes it so easy to use and charge, no frequent change of remote batteries and antennas. This boat uses stainless parts,stainless line release pin,screws,waterproof hull, suitable for both salt and fresh water conditions. The unique design of the our bait boat automatically releases the bait pin. and the bait pin is automatically reset and travels more smoothly.