1. Introduction
Thank you for purchasing the GoolRC Remote Control Dolphin Boat. This product features 2.4GHz remote control technology for precise operation, a high-simulation dolphin design with head ball rotation, and waterproof construction. It is designed for use in pools, lakes, and rivers, offering an engaging experience with its multi-directional control and one-click demo features.
2. Safety Information
- This product is suitable for individuals aged 14 years and older. Adult supervision is recommended for younger users.
- Do not operate the boat in saltwater or near marine life.
- Ensure all battery compartments are securely sealed before placing the boat in water.
- Avoid operating the boat in crowded swimming areas or where it may interfere with other water activities.
- Always remove the boat from water and turn off power when not in use or during battery changes.
- Do not attempt to modify or disassemble the product, as this may cause damage or injury.
- Keep small parts away from children to prevent choking hazards.
3. Package Contents
Please check the package contents to ensure all items are present:
- GoolRC Remote Control Dolphin Boat
- 2.4GHz Remote Control
- 3.7V Rechargeable Lithium Battery (for dolphin boat)
- USB Charging Cable
- Screwdriver
- User Manual
4. Setup
4.1 Dolphin Boat Battery Installation
1. Loosen the screws on the main battery compartment cover located on the underside of the dolphin boat using the provided screwdriver.
2. Open the battery cover and connect the 3.7V rechargeable lithium battery to the connector socket, ensuring correct polarity.
3. Place the battery inside the compartment, ensuring the waterproof seal ring is properly seated.
4. Close the battery cover and tighten the screws securely to maintain waterproof integrity.
Note: The dolphin boat will only activate when its bottom touches the water, due to its water sensing switch. It will power off automatically when removed from water.
4.2 Remote Control Battery Installation
1. Loosen the screws on the remote control's battery cover using the provided screwdriver.
2. Insert two 1.5V AA alkaline batteries into the compartment, observing the correct polarity (+/-).
3. Close the battery cover and tighten the screws securely.

Figure 1: Battery installation for the dolphin boat and remote control. The dolphin requires a 3.7V rechargeable battery, and the remote requires two 1.5V AA batteries. Ensure waterproof seals are correctly in place.
4.3 Charging the Dolphin Boat Battery
1. Connect the USB charging cable to the dolphin boat's battery.
2. Plug the other end of the USB cable into a standard USB power adapter (not included) or a computer USB port.
3. The charging indicator light will show the charging status (refer to the specific light behavior in your product's quick start guide if available). Charging typically takes [X] hours (refer to product packaging for exact time).
4. Disconnect the charger once the battery is fully charged.
5. Operating Instructions
5.1 Power On and Pairing
1. Ensure both the dolphin boat and the remote control have fresh or fully charged batteries installed.
2. Place the dolphin boat into the water. The boat will activate automatically due to its water sensing switch.
3. Turn on the remote control. The remote and boat should automatically pair. If pairing fails, turn both off and repeat the process.
5.2 Basic Controls
The 2.4GHz remote control allows for precise, interference-free operation.
- Forward: Push the left joystick forward.
- Backward: Pull the left joystick backward.
- Turn Left: Push the right joystick left.
- Turn Right: Push the right joystick right.
- Automatic Demonstration: Press the designated demo button on the remote control to activate a pre-programmed movement sequence.
- Dolphin Head Ball Rotation: Use the specific button or joystick combination (refer to remote control diagram) to initiate the ball rotation feature on the dolphin's head.

Figure 2: The GoolRC RC Dolphin Boat and its remote control, highlighting features like all-directional control, one-click demonstration, and waterproof construction.
5.3 Special Features
- Waterproof Design: The boat is fully waterproof, preventing water from entering internal components. The remote control is also designed for use near water.
- Double Propeller Drive: Equipped with a double propeller system for efficient movement and multi-directional control.
- Simulated Tail Movement: The segmented tail design allows for realistic dolphin-like swaying movements in the water. The tail can also be removed by pressing the dorsal fin for maintenance or storage.

Figure 3: Detailed view of the dolphin boat's simulated tail movement, the mechanism for detaching the tail, and the double propeller drive system.
5.4 Demonstration Video
Video 1: Official product video demonstrating the GoolRC Remote Control Dolphin Boat's movement, ball spinning feature, and multi-directional control in water.
6. Maintenance
- After each use, gently wipe the dolphin boat and remote control with a soft, dry cloth.
- Ensure all water is drained from the boat's interior before storage.
- Store the product in a cool, dry place away from direct sunlight and extreme temperatures.
- Remove batteries from both the boat and remote control if storing for extended periods to prevent leakage.
- Regularly check the propellers for any debris or entanglement and clean as necessary.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Boat does not move. | Low battery in boat or remote; not in water; not paired. | Charge boat battery, replace remote batteries, ensure boat is in water, re-pair remote. |
| Poor control or short range. | Low remote battery; interference; too far from boat. | Replace remote batteries, move away from other 2.4GHz devices, operate within recommended range. |
| Dolphin head ball does not rotate. | Feature not activated; obstruction. | Ensure correct button is pressed, check for any debris obstructing rotation. |
| Water inside battery compartment. | Battery cover not sealed properly. | Immediately remove batteries, dry compartment thoroughly, ensure waterproof seal is correctly seated and cover is tightened before next use. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | GoolRC |
| Model Number | 3738AD |
| Control Frequency | 2.4GHz |
| Dolphin Boat Battery | 3.7V Rechargeable Lithium Battery |
| Remote Control Batteries | 2 x 1.5V AA Alkaline Batteries (not rechargeable) |
| Material | Plastics |
| Item Dimensions (L x W x H) | 14.96 x 3.54 x 5.91 inches (38 x 9 x 15 cm) |
| Color | Blue |
| Operation Mode | Automatic (water sensing) |

Figure 4: Product dimensions for the GoolRC RC Dolphin Boat and its remote control, including packaging size.
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.