1. Product Overview
The SIMREX X500 is a compact and foldable mini drone equipped with a 720P HD camera, designed for ease of use and stable flight. It features Optical Flow Positioning and Altitude Hold for stable hovering, Headless Mode for simplified control, and 3D Flips for dynamic maneuvers. This manual provides detailed instructions to help you get the most out of your drone.

Figure 1: SIMREX X500 Mini Drone, remote controller, and folded drone for portability.
2. Setup and Preparation
2.1 Unpacking and Product List
Carefully unpack all components from the box. Ensure all items are present before proceeding.

Figure 2: Contents of the SIMREX X500 package.
2.2 Charging the Battery
Before first use, fully charge the drone battery. Connect the battery to the provided USB charging cable and plug it into a 5V adapter. The charging indicator will show the charging status.
2.3 Propeller Replacement
If a propeller is damaged, replace it using the provided screwdriver. Ensure to match the 'A' propellers to 'A' arms and 'B' propellers to 'B' arms for correct flight.
2.4 Installing the Protective Frame
For added protection, especially during initial flights, install the propeller protective frames onto each motor arm.
2.5 Installing the Drone Battery
Insert the fully charged battery into the drone's battery compartment. Ensure it clicks securely into place.
2.6 Remote Controller Battery Installation
Open the battery compartment on the back of the remote controller and insert the required batteries (typically AAA, not included unless specified). Close the compartment securely.
2.7 Installing the Phone Holder
Attach the phone holder to the remote controller. This allows you to mount your smartphone for FPV viewing and app control.
3. Operating Instructions
3.1 Frequency Binding and Calibration
- Place the drone on a horizontal surface with the camera facing forward.
- Long press the power button on the drone to turn it on. The lights will flash.
- Press the power button on the remote controller to turn it on.
- Push the left joystick upwards then downwards. The drone lights will become steady, indicating successful binding.
- For calibration, push both joysticks 45° outwards and downwards simultaneously. The flashing lights will change to steady, indicating successful calibration.
3.2 Basic Flight Operations
Familiarize yourself with the remote controller's functions:
- One Key Take-off/Landing: Short press the designated button for automatic take-off or landing.
- Altitude Hold: The drone maintains its current altitude automatically, allowing for stable hovering.
- Directional Control: Use the left joystick for vertical movement (up/down) and rotation (left/right). Use the right joystick for horizontal movement (forward/backward, left/right).
- Speed Adjustment: The drone offers multiple speed modes (e.g., low, high) for different skill levels. Press the speed button to cycle through them.
- Headless Mode: Activate Headless Mode to simplify flight direction. The drone's forward direction will align with the controller's forward direction, regardless of the drone's orientation.
- 3D Flips: Press the 3D flip button and then push the right joystick in a desired direction to perform a flip.
- Trajectory Flight: In the companion app, draw a flight path on your screen, and the drone will follow the route automatically.

Figure 3: Optical Flow Positioning and Altitude Hold for stable flight.

Figure 4: Headless Security Mode simplifies directional control.

Figure 5: The drone can perform 360-degree flips and rolls.

Figure 6: Waypoints Fly feature allows drawing custom flight paths.
3.3 Taking Photos and Videos
The drone is equipped with a 720P HD camera. Use the dedicated buttons on the remote controller or the companion app to capture photos and record videos.

Figure 7: The 720P HD camera captures clear aerial photos and videos.
3.4 APP Operation
Download the 'SIMREX GO' app by scanning the QR code in the manual or searching on your app store. Connect your smartphone to the drone's Wi-Fi network (SIMREX-X500-xxxxxx). The app provides an interface for flight control, live video feed, photo/video capture, and access to an electronic manual.
4. Maintenance
- Cleaning: Use a soft, dry cloth to clean the drone and remote controller. Avoid using liquids or solvents.
- Propeller Inspection: Regularly check propellers for any damage or cracks. Replace damaged propellers immediately to ensure safe flight.
- Battery Care: Store batteries in a cool, dry place. Do not overcharge or over-discharge. If not used for extended periods, charge the battery to about 50% capacity.
- Storage: When not in use, fold the drone arms and store it in a safe place to prevent damage.
5. Troubleshooting
- Drone not responding: Ensure both the drone and remote controller are powered on and successfully bound. Check battery levels.
- Unstable flight/hovering: Perform calibration as described in Section 3.1. Check for damaged propellers. Ensure the drone is on a flat surface during take-off.
- Short flight time: Ensure the battery is fully charged before each flight. Battery performance can degrade over time.
- No live video feed: Confirm your smartphone is connected to the drone's Wi-Fi network and the 'SIMREX GO' app is open.
- Drone drifts: Use the fine-tuning buttons on the remote controller to adjust for any drift.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | SIMREX |
| Model Name | X500 |
| Video Capture Resolution | 720p |
| Effective Still Resolution | 0.9 MP |
| Connectivity Technology | Wi-Fi |
| Skill Level | Beginner |
| Battery Capacity | Approximately 10-13 minutes flight time per charge |
| Control Type | Remote Control |
| Material | Plastic |
| Product Dimensions | 4.33"L x 3.15"W x 1.38"H (Folded) |
| Item Weight | 12.3 ounces |
7. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact details provided in your product packaging or visit the official SIMREX website. Keep your purchase receipt as proof of purchase.




