1. Introduction
Thank you for choosing the GTPLAYER GT905 Gaming Chair. This manual provides essential information for the safe assembly, proper operation, and effective maintenance of your new chair. Please read these instructions carefully before use and retain them for future reference.

The GTPLAYER GT905 Gaming Chair, designed for comfort and durability.
2. Safety Information
To ensure safe operation and prevent injury or damage, please observe the following safety guidelines:
- Maximum Weight Capacity: Do not exceed the maximum recommended weight of 159 kg (350 lbs).
- Assembly: Ensure all bolts and screws are securely tightened before using the chair. Periodically check and re-tighten as necessary.
- Usage: Do not stand on the chair. Use the chair on a flat, stable surface to prevent tipping.
- Children: Keep children away from moving parts during assembly and adjustment.
- Maintenance: Do not use abrasive cleaners or harsh chemicals on the chair's surfaces.
3. Package Contents
Before assembly, verify that all components are present and undamaged. If any parts are missing or damaged, please contact customer support.
- Backrest
- Seat Base with Armrests
- Gas Lift Cylinder
- Star Base
- Casters (5 pieces)
- Lumbar Support Pillow
- Headrest Pillow
- Assembly Hardware (screws, washers, hex key)
- Instruction Manual (with QR code for video guide)
4. Assembly Instructions
Follow these steps to assemble your GTPLAYER GT905 Gaming Chair. An assembly video guide is available via the QR code provided in the printed manual.
- Attach Casters to Star Base: Insert each of the five casters into the holes at the end of each leg of the star base until they click securely into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the assembled star base.
- Attach Mechanism to Seat: Secure the seat mechanism to the underside of the seat base using the provided screws. Ensure the front of the mechanism faces the front of the seat.
- Connect Seat to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder, ensuring it is centered and stable.
- Attach Backrest to Seat: Align the backrest with the mounting brackets on the seat base and secure it using the designated screws.
- Install Pillows: Attach the headrest and lumbar support pillows to the backrest using their integrated straps. Adjust their positions for optimal comfort.

The GTPLAYER GT905 Gaming Chair fully assembled and ready for use.
5. Operating Instructions
Your GTPLAYER GT905 chair offers several adjustable features for personalized comfort:
5.1. Height Adjustment
To adjust the chair's height, locate the lever on the right side beneath the seat. While seated, pull the lever up to lower the chair. To raise the chair, stand up slightly and pull the lever up. Release the lever to lock the height.
5.2. Backrest Recline (90° - 150°)
The backrest can be reclined between 90 and 150 degrees. Pull the recline lever, typically located on the left side of the seat, and lean back to your desired angle. Release the lever to lock the backrest in position.

The chair offers multiple recline positions for various activities, from upright work to relaxed lounging.
5.3. Integrated Ottoman
For added relaxation, pull out the integrated ottoman located beneath the seat. Extend it fully to support your legs. Push it back in when not in use.

The integrated ottoman provides comfortable leg support for relaxation.
5.4. Lumbar Support Pillow
The lumbar support pillow can be adjusted vertically along the backrest to provide targeted support for your lower back. Position it to match the natural curve of your spine.

The adjustable lumbar support pillow enhances ergonomic comfort.
5.5. Linkage Armrests
The armrests are designed to move in conjunction with the backrest's recline, providing continuous arm support regardless of your sitting position.

Linkage armrests adjust with the backrest for consistent support.
6. Features
The GTPLAYER GT905 Gaming Chair incorporates several features for enhanced user experience:
- Ergonomic Design: Engineered to support the natural curves of your body, including head, neck, shoulders, back, and legs, distributing 95% of body pressure for long-term comfort. Features a wide wing-back design and molded memory foam headrest.
- Breathable Fabric & Mesh: Constructed with a combination of durable fabric and breathable mesh to prevent heat buildup and ensure comfort during extended use.
- Pocket Coil Seat: The seat cushion features pocket coils, similar to those found in mattresses, providing responsive and comfortable support.
- Sturdy Construction: Built with a robust metal frame, an SGS-certified gas lift for smooth height adjustments, a stable star base, and silent casters for quiet movement.

Ergonomic design provides comprehensive support for various body parts.

Key components like the SGS gas lift, sturdy base, and silent casters ensure durability and smooth operation.
7. Maintenance
Regular maintenance will prolong the life and appearance of your GTPLAYER GT905 Gaming Chair:
- Cleaning Fabric Surfaces: For general cleaning, wipe fabric surfaces with a soft, damp cloth. For stubborn stains, use a mild fabric cleaner and follow the product instructions. Test on an inconspicuous area first.
- Frame and Base: Wipe metal and plastic parts with a soft, dry cloth. Avoid harsh chemicals that may damage the finish.
- Casters: Periodically clean hair and debris from the casters to ensure smooth movement.
- Hardware Check: Every few months, check all screws and bolts to ensure they are tight. Re-tighten if necessary to maintain stability.
8. Troubleshooting
If you encounter any issues with your GTPLAYER GT905 Gaming Chair, refer to the following common problems and solutions:
- Chair is Creaking:
Solution: Check all assembly bolts and screws, especially where the backrest attaches to the seat and the mechanism to the seat. Tighten any loose connections. A small amount of silicone lubricant can be applied to moving metal parts if creaking persists. - Gas Lift Not Adjusting Height:
Solution: Ensure the height adjustment lever is fully engaged. If the gas lift still does not function, it may be faulty. Contact customer support for assistance. - Chair Feels Unstable/Wobbly:
Solution: Verify that the star base is correctly attached to the gas lift and that all casters are fully inserted. Ensure all screws connecting the seat and backrest are securely tightened. - Casters Not Rolling Smoothly:
Solution: Remove any hair, dust, or debris that may be caught in the caster wheels. Clean the wheels and their axles.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | GTPLAYER |
| Model Number | GT905 |
| Color | Black |
| Material | Metal (Frame), Fabric (Seat) |
| Seat Material | Fabric |
| Product Dimensions (D x W x H) | 73 cm x 20 cm x 43 cm (Note: Width dimension may refer to packaging) |
| Item Weight | 20 kg |
| Maximum Recommended Weight | 159 kg (350.27 lbs) |
| Reclining Angle | 90° to 150° |
| Armrest Style | Linkage Armrest (Round) |
| Base Style | Star Base |
| Included Components | Ottoman, Headrest Pillow, Lumbar Support Pillow |
| Assembly Required | Yes |
| Country of Origin | China |

Approximate dimensions of the GTPLAYER GT905 Gaming Chair.
10. Warranty and Support
GTPLAYER is committed to providing high-quality products and customer satisfaction.
10.1. Manufacturer's Warranty
This product comes with a 12-month manufacturer's quality warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
10.2. Customer Support
For any questions, concerns, or warranty claims, please contact GTPLAYER customer support. Please have your purchase receipt and product model number (GT905) ready when contacting support.
Contact Information:
Website: www.gtplayerchair.com (Example, please refer to your purchase documentation for official contact details)
Email: support@gtplayerchair.com (Example, please refer to your purchase documentation for official contact details)