Introduction
This manual provides instructions for the proper use and maintenance of your Lykus HC-4620 Waterproof Hard Case. Designed for robust protection, this case is suitable for various sensitive equipment such as cameras, projectors, laptops, and other electronic devices.

Image: The Lykus HC-4620 Waterproof Hard Case in black, shown closed from an angled view.
Setup and Foam Customization
The Lykus HC-4620 case features customizable foam inserts to secure your equipment. Follow these steps to tailor the interior to your items:
- Prepare Your Items: Lay out the items you intend to store in the case on a flat surface. Arrange them as you would inside the case, ensuring a minimum distance of 0.4 inches (1 cm) between items for optimal protection.
- Measure Dimensions: Carefully measure the length, width, and height of your items. Pay special attention to the tallest item to ensure it fits within the case's depth.
- Customize the Foam: The case includes multiple layers of pre-cut foam. These foam pieces can be easily configured by tearing along the perforated lines to match the shape of your equipment. Remove the foam sections that correspond to the outline of your items.
- Layering: The foam consists of several pluckable layers and a bottom cushion. Utilize these layers to achieve the desired depth and support for your items.

Image: An illustration demonstrating how to customize the foam inserts by tearing along pre-cut lines to fit equipment. It shows protective sponge, multiple foam layers, and the tear-and-pull method.

Image: A detailed diagram showing the grid pattern of the pluckable foam insert, indicating 30 squares per row and 23 per column, with each square measuring 0.55 inches (1.4 cm).

Image: A four-panel guide illustrating how to measure items (length, width, height) and arrange them to determine the appropriate case size.
Operating Instructions
The Lykus HC-4620 case is designed for secure and convenient operation.
Latches and Closure:
The case features firm latches that provide a secure closure. To open, lift the latch handles. To close, press the lid down firmly and snap the latches into place until they click.
Air Pressure Valve:
An integrated air pressure valve allows for pressure equalization, which is useful when traveling through different altitudes. To equalize pressure, simply press the valve button. This ensures easy opening of the case after changes in atmospheric pressure.
Security:
The case is padlock-ready, allowing you to add a padlock for enhanced security of your valuable contents.

Image: A collage highlighting nine features of the case, including anti-scratch surface, silicone rubber handle, firm latches, padlock readiness, air pressure valve, steel hinge, solid construction, IP67 waterproof rating, and dustproof design.
Maintenance
To ensure the longevity and performance of your Lykus HC-4620 case, follow these maintenance guidelines:
- Cleaning: Clean the exterior of the case with a damp cloth and mild soap. Avoid harsh chemicals or abrasive cleaners that could damage the polypropylene material.
- Waterproof Seal: Regularly inspect the rubber seal around the lid for any signs of damage or debris. A clean and intact seal is crucial for maintaining the IP67 dust- and waterproof rating.
- Foam Care: The foam inserts can be gently cleaned with a vacuum or a lint roller. If they become wet, allow them to air dry completely before reinserting them into the case.
- Storage: Store the case in a cool, dry place away from direct sunlight when not in use.

Image: A Lykus hard case with water droplets on its surface, illustrating its waterproof capabilities.
Troubleshooting
This section addresses common issues you might encounter with your Lykus HC-4620 case.
- Difficulty Opening After Air Travel: If the case is difficult to open after changes in altitude (e.g., air travel), press the air pressure equalization valve to release any vacuum or pressure buildup.
- Lid Not Closing Properly: Ensure no items are obstructing the lid or the latches. Check the rubber seal for any debris that might prevent a complete closure. Apply firm, even pressure when closing the latches.
- Water Leakage: Verify that the lid is fully closed and all latches are securely fastened. Inspect the rubber seal for any damage, cracks, or foreign particles. A damaged seal may compromise the waterproof integrity.
Specifications
Detailed specifications for the Lykus HC-4620 Waterproof Hard Case:
| Feature | Detail |
|---|---|
| Interior Size (with foam) | 17 x 12.7 x 6.9 inches / 42.3 x 32.3 x 17.7 cm |
| Interior Size (empty case) | 18.1 x 14.2 x 7.1 inches / 46 x 36 x 18 cm |
| Exterior Size | 20.28 x 16.34 x 7.56 inches / 51.5 x 41.5 x 19.2 cm |
| Material | Polypropylene (PP) resin |
| Waterproof Rating | SGS certified IP67 (dust- and waterproof) |
| Weight | 3.8 Kilograms |
| Closure Type | Snap latches |
| Handle | Silicone Rubber Handle |
| Model Number | HC-4620 |

Image: A diagram illustrating the internal dimensions of the HC-4620 case, including base depth (5.4 in / 13.8 cm), lid depth (1.5 in / 3.9 cm), and the pluckable area (17 x 12.7 in / 42.3 x 32.3 cm).
Warranty and Support
Lykus products are backed by a commitment to quality and customer satisfaction. The HC-4620 case comes with lifetime support.
For any inquiries, technical assistance, or warranty claims, please visit the official Lykus store or contact customer service through the platform of purchase.





