1. Introduction
The Celly FlexBike XXL is a multi-purpose, waterproof, and highly resistant case and holder designed to protect your smartphone or navigation device in various extreme conditions. It is ideal for use on bicycles, construction sites, or boats, safeguarding your device from vibrations, shocks, rain, mud, and dust. This manual provides instructions for proper installation, operation, and maintenance.
Important Note: This product is waterproof but not suitable for diving or full submersion.
2. Package Contents
- Celly FlexBike XXL Case
- Handlebar Mounting Clamp
- Set of internal shims for vibration dampening and device compatibility
3. Setup and Installation
3.1 Installing the Handlebar Mount
- Identify a suitable position on your bicycle's handlebar. The clamp is designed for tubular handlebars.
- Open the handlebar mounting clamp.
- Position the clamp securely around the handlebar.
- Tighten the clamp using the integrated mechanism until it is firmly attached. No specific tools are required for this step.

Image 1: The Celly FlexBike XXL case securely mounted on a bicycle handlebar, showing the device in use.
3.2 Inserting Your Smartphone into the Case
- Open the zipper of the FlexBike XXL case.
- Select the appropriate internal shims from the provided set. These shims help to dampen shocks and vibrations and ensure a snug fit for various smartphone sizes.
- Place your smartphone inside the case, adjusting the shims as needed to secure the device.
- Ensure the transparent front panel aligns with your smartphone's screen for full touch-screen functionality.
- Close the zipper completely to ensure the case is sealed and waterproof.

Image 2: The Celly FlexBike XXL case, highlighting its internal dimensions (151mm x 80mm) suitable for various smartphones.
3.3 Attaching the Case to the Mount
The case features a secure attachment mechanism that connects to the handlebar mount. Align the case with the mount and push firmly until you hear a click, indicating it is locked into place. Ensure the connection is secure before riding.
4. Operation
4.1 Using Your Smartphone
The transparent front panel allows full access to your smartphone's touch-screen functions. You can navigate maps, control music, or answer calls without removing your device from the case.
4.2 Protection Features
- Waterproof: Protects against rain, splashes, and moisture.
- Shock and Vibration Resistant: Internal shims and hard shell construction absorb impacts and vibrations.
- Dust and Mud Protection: Keeps your device clean in challenging environments.
5. Maintenance
- Cleaning: Wipe the case with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Regularly check the handlebar clamp and case attachment for any signs of wear or damage. Ensure the zipper is functioning correctly to maintain waterproof integrity.
- Storage: Store the FlexBike XXL in a cool, dry place when not in use.
6. Troubleshooting
- Problem: Case feels loose on the handlebar.
- Solution: Ensure the handlebar clamp is tightened securely. If the clamp is damaged, it may need replacement.
- Problem: Smartphone is not secure inside the case.
- Solution: Use the provided internal shims to create a snug fit around your smartphone. Adjust their placement until the device is stable.
- Problem: Touch-screen functionality is impaired.
- Solution: Ensure the transparent front panel is clean and free of debris. Verify that your smartphone is positioned correctly within the case, with its screen fully aligned under the transparent panel.
- Problem: Water ingress into the case.
- Solution: Check that the zipper is fully closed and free from obstructions. Inspect the case for any tears or damage that might compromise its waterproof seal. Remember, the case is not designed for full submersion.
7. Specifications
| Brand | Celly |
| Model Number | FLEXBIKEXXL |
| Material | Plastic |
| Item Weight | 0.13 Kilograms |
| Closure Type | Clamp (for handlebar mount) |
| Handle Type | Handlebar Mount |
| Shell Type | Hard |
| Internal Dimensions (Approx.) | 151mm x 80mm |
| GTIN | 08021735095729 |
8. Warranty Information
Celly products are covered by a standard manufacturer's warranty against defects in materials and workmanship. The specific duration and terms of the warranty may vary by region. Please retain your proof of purchase for warranty claims. For detailed warranty information, refer to the official Celly website or contact customer support.
9. Customer Support
For technical assistance, product inquiries, or warranty support, please visit the official Celly website or contact their customer service department. Contact details can typically be found on the product packaging or the Celly official website.
- Website: www.celly.com (Note: This is a placeholder link, please verify the actual Celly support website.)
- Email: Refer to the website for contact forms or email addresses.
- Phone: Refer to the website for regional phone numbers.