Introduction
Thank you for purchasing the GT SONIC GT-F6 Ultrasonic Jewellery Cleaner. This device utilizes high-frequency ultrasonic waves to create microscopic bubbles in a cleaning solution, effectively removing dirt, grime, and contaminants from various items. This manual provides essential information for safe and efficient operation, maintenance, and troubleshooting of your ultrasonic cleaner.

Image: GT SONIC GT-F6 Ultrasonic Jewellery Cleaner with lid open, showing a watch and eyeglasses inside the cleaning basket.
Important Safety Instructions
Please read all safety instructions carefully before operating the device to prevent injury or damage.
- Do not immerse the main unit in water or other liquids.
- Ensure the power cord and plug are not damaged. Do not operate if damaged.
- Keep the device out of reach of children.
- Do not operate the cleaner without liquid in the tank.
- Unplug the device from the power outlet when not in use and before cleaning.
- Do not touch the plug with wet hands.
- Use only the specified voltage (AC100-120V, 60Hz or AC200-240V, 50Hz as per specifications).
- Avoid placing the unit on unstable surfaces.
- Do not disassemble or attempt to repair the unit yourself. Contact customer support for assistance.
Package Contents
Verify that all items are present in the package:
- 1 x GT SONIC Ultrasonic Jewellery Cleaner
- 1 x Cleaning Basket
- 1 x Instruction Manual
Product Overview
Familiarize yourself with the components of your ultrasonic cleaner:

Image: Diagram illustrating the main components of the GT SONIC GT-F6 Ultrasonic Cleaner, including the lid, cleaning basin, LED display, control buttons, and accessories.
- Lid: Transparent cover to observe the cleaning process.
- Cleaning Basin: Stainless steel tank for holding water/cleaning solution.
- LED Display: Shows the selected cleaning time.
- ON/OFF Button: Powers the unit on and off.
- Time Display/Setting Button: Used to select desired cleaning cycle.
- Cleaning Basket: Holds items during cleaning to prevent direct contact with the tank bottom.
- Watch Holder: Specific accessory for cleaning watches without immersing the watch head.
Setup
- Placement: Place the ultrasonic cleaner on a flat, stable, and dry surface. Ensure it is away from heat sources and direct sunlight.
- Power Connection: Plug the power cord into a grounded electrical outlet. Ensure the voltage matches the device's specifications.
- Fill Tank: Open the lid and fill the stainless steel cleaning basin with water. For enhanced cleaning, a small amount of mild detergent or specialized ultrasonic cleaning solution can be added. Do not exceed the "MAX" fill line.
Operating Instructions
Follow these steps for effective cleaning:

Image: Step-by-step visual guide demonstrating the operation of the ultrasonic cleaner.
- Prepare Items: Place the items to be cleaned into the cleaning basket. For delicate items or watches, use the provided watch holder. Ensure items are fully submerged in the cleaning solution.
- Close Lid: Close the transparent lid.
- Power On: Press the ON/OFF button to turn on the unit. The LED display will illuminate.
- Select Cleaning Cycle: Use the TIME button to cycle through the preset cleaning times: 90, 180, 280, 380, and 480 seconds. Choose the appropriate duration based on the item's dirtiness and material. The unit generates 50,000 Hz ultrasonic sound waves for thorough cleaning.
- Start Cleaning: The cleaning process will begin automatically after selecting the time.
- Completion: The unit will automatically shut off once the selected cycle is complete.
- Remove Items: Open the lid, carefully remove the cleaning basket with the cleaned items. Rinse items under clean water and dry them with a soft cloth.
- Empty Tank: Unplug the unit and empty the water from the cleaning basin. Wipe the tank dry.
Suitable Items for Cleaning
The GT-F6 Ultrasonic Cleaner is suitable for a wide range of items:
- Jewelry (rings, necklaces, earrings, bracelets)
- Eyeglasses and sunglasses (plastic and metal frames)
- Watches (waterproof watches, watch bands - use watch holder for non-waterproof watch heads)
- Coins and other small metal objects
- Dentures and retainers
- Razor heads and small tools
- Pacifiers and small baby items

Image: Examples of various items suitable for cleaning with the GT-F6 Ultrasonic Cleaner.
Items Not Recommended for Ultrasonic Cleaning
Avoid cleaning the following items to prevent damage:
- Soft or porous gemstones (e.g., pearls, emeralds, opals, turquoise)
- Items with loose stones or settings
- Plated jewelry where the plating is already worn or thin
- Wooden items, leather, or fabric
- Non-waterproof watches (immerse only the band)
- Items that may be damaged by water or vibration.
Maintenance and Care
- Cleaning the Unit: After each use, unplug the unit and empty the water from the tank. Wipe the inside of the tank and the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners.
- Storage: Store the ultrasonic cleaner in a cool, dry place, away from direct sunlight and moisture. Ensure the tank is completely dry before storage.
- Water Quality: While tap water can be used, distilled water or a specific cleaning solution is recommended for optimal results and to prevent mineral buildup in the tank.
Troubleshooting
Refer to the table below for common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Not plugged in, power outlet issue, damaged cord. | Check power connection. Try a different outlet. Inspect power cord for damage. |
| No ultrasonic sound/vibration. | Insufficient water, unit malfunction. | Ensure water level is above the MIN line. If problem persists, contact customer support. |
| Items not cleaning effectively. | Incorrect cleaning solution, too short cycle, heavily soiled items, tank overfilled. | Use appropriate cleaning solution. Increase cleaning time. Pre-soak heavily soiled items. Ensure tank is not overfilled. |
| Unit is noisy. | Normal operation sound, unit on unstable surface. | A slight buzzing sound is normal. Ensure unit is on a stable, flat surface. |
Specifications
Technical details of the GT SONIC GT-F6 Ultrasonic Cleaner:

Image: Detailed specifications table for the GT-F6 Ultrasonic Cleaner.
| Feature | Detail |
|---|---|
| Model | GT-F6 |
| Tank Material | SUS 304 Stainless Steel |
| Tank Size | 150 x 130 x 50 mm |
| Overall Size | 175 x 155 x 100 mm |
| Ultrasonic Power | 40 KHz |
| Capacity | 750 ml (25 oz) |
| Time Setting | 5 preset cycles: 90s, 180s, 280s, 380s, 480s |
| Output Power | 35W |
| Power Supply | AC100-120V, 60Hz / AC200-240V, 50Hz |
| Package Dimensions | 8.82 x 7.28 x 5.51 inches |
| Item Weight | 2.73 Pounds |
Warranty and Customer Support
GT SONIC is committed to providing high-quality products and customer satisfaction. This product comes with dedicated customer support.
- Customer Service: For any concerns or assistance, please contact our 24-hour dedicated email customer support. We are here to help and ensure your satisfaction.
- Warranty Information: Please refer to the product packaging or purchase documentation for specific warranty terms and conditions.





