Introduction
Thank you for choosing the DIZO Trimmer Neo DT3221. This manual provides essential information for the safe and effective use of your new trimmer. Please read it thoroughly before first use and keep it for future reference.
Safety Instructions
- Do not immerse the trimmer in water while charging.
- Keep the appliance dry. Do not use it in the shower or bath.
- Ensure the charging cable is not damaged before use.
- Keep out of reach of children.
- Do not disassemble the trimmer. Contact authorized service personnel for repairs.
- Avoid using the trimmer on irritated or damaged skin.
Package Contents
The DIZO Trimmer Neo DT3221 package includes:
- 1 x DIZO Trimmer Neo (Model DT3221)
- 1 x Trimming Comb
- 1 x USB Type-C Charging Cable
- 1 x Cleaning Brush
- 1 x Lubricating Oil
- 1 x User Manual

Image: The DIZO Trimmer Neo DT3221 and its included trimming comb.
Product Features
- High Precision Trimming: Achieve precise grooming with 0.5mm accuracy.
- 20 Length Settings: Adjust the trimming length from 0.5mm to 20mm using the integrated length-setting knob.
- Long Battery Life: Up to 300 minutes of cordless operation on a full charge.
- Fast Charging: Equipped with USB Type-C for convenient and quick charging.
- Durable Blades: Features 420 Stainless Steel Self-Sharpening Blades with safe rounded tips.
- Washable Design: IPX5 water resistance allows for easy cleaning under running water.
- Ergonomic Grip: Designed for comfortable handling and control during use.

Image: Detail of the sharp and safe 420 Stainless Steel Self-Sharpening Blades.

Image: The DIZO Trimmer Neo is fully washable for easy cleaning.
Charging the Trimmer
- Ensure the trimmer is switched off before charging.
- Insert the USB Type-C cable into the charging port at the bottom of the trimmer.
- Connect the other end of the USB cable to a compatible USB power adapter (not included) or a computer USB port.
- The charging indicator light will illuminate to show that the trimmer is charging.
- A full charge provides up to 300 minutes of cordless use.
Operating Instructions
Attaching/Detaching the Trimming Comb
- To attach: Align the trimming comb with the trimmer head and push it gently until it clicks into place.
- To detach: Hold the trimmer firmly and gently pull the comb upwards from the trimmer head.
Adjusting Trimming Length
- With the trimming comb attached, rotate the length-setting knob located on the trimmer body.
- Select your desired trimming length from 0.5mm to 20mm. The selected length will be indicated on the knob.

Image: A man demonstrating beard trimming with the DIZO Trimmer Neo, highlighting the length-setting knob.
Trimming Your Beard/Moustache
- Ensure your beard or moustache is clean and dry.
- Attach the desired trimming comb and set the length.
- Press the power button to turn on the trimmer.
- Hold the trimmer with the blades facing downwards and move it against the direction of hair growth.
- Use slow, controlled movements for an even trim.
- For detailing or precise lines, remove the comb and use the bare blades carefully.
Maintenance and Cleaning
- After Each Use: Turn off the trimmer and detach the trimming comb. Use the cleaning brush to remove loose hairs from the blades and comb.
- Washing: The trimmer head is fully washable (IPX5). You can rinse the blades and comb under running water. Ensure the trimmer is disconnected from the charging cable before washing.
- Drying: After washing, shake off excess water and allow the blades and comb to air dry completely before reattaching or storing.
- Lubrication: Periodically apply a small drop of the provided lubricating oil to the blades to maintain optimal performance and longevity. Turn on the trimmer for a few seconds to distribute the oil evenly.
- Storage: Store the trimmer in a dry place, away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not turn on. | Battery is depleted. | Charge the trimmer fully. |
| Trimmer is not cutting effectively. | Blades are clogged with hair or not lubricated. | Clean the blades thoroughly and apply lubricating oil. |
| Trimmer makes unusual noise. | Blades may be misaligned or require lubrication. | Ensure blades are properly seated. Apply lubricating oil. If issue persists, contact support. |
| Charging indicator not lighting up. | Cable or adapter issue, or trimmer not connected properly. | Check USB cable and adapter. Ensure cable is fully inserted into the trimmer. |
Specifications
- Model Number: DT3221
- Brand: DIZO
- Blade Material: Stainless Steel (420 Grade)
- Trimming Range: 0.5 - 20 mm
- Length Settings: 20
- Power Source: Battery Powered (USB Type-C Charging)
- Battery Run Time: Up to 300 minutes
- Water Resistance: IPX5 (Washable)
- Product Dimensions (LxWxH): 14.8 x 3.4 x 3.2 cm
- Item Weight: 210 g
- Target Audience: Men
- Recommended Use: Beard, Moustache
Warranty and Support
For warranty information or technical support, please refer to the warranty card included in your product packaging or visit the official DIZO website. Please retain your purchase receipt for warranty claims.
Manufacturer Contact Information: +8613246727598, Zmsp Technoloay (shenzhen) Co.. Ltd