1. Product Overview
The NEICIT FK-398 Electric Razor is a versatile grooming device designed for men. It features a 3-in-1 grooming kit including a 3D floating shaver head, a hair trimmer, and a nose hair trimmer. This rechargeable shaver supports both wet and dry shaving, is IPX8 waterproof, and includes an LED display for battery status and a travel lock function.

Figure 1: NEICIT FK-398 Electric Razor with its interchangeable heads.

Figure 2: The 3-in-1 grooming kit includes a 3D floating shaver, hair trimmer, and nose hair trimmer.
2. Safety Information
- Always unplug the shaver before use.
- Do not use while charging.
- Keep the shaver away from water while charging.
- Be cautious when using the shaver to avoid cuts.
- Clean the shaver after each use and allow it to dry completely before storing.
3. Setup
3.1 Initial Charging
Before first use, fully charge the electric razor. Connect the USB-C charging cable to the shaver and a compatible power source (e.g., power adapter, laptop, car charger, power bank). The LED display will indicate the charging status. A full charge typically takes approximately 60 minutes and provides up to 60 days of running time, depending on usage.

Figure 3: Charging the NEICIT FK-398 electric razor via USB-C.
3.2 Attaching/Detaching Heads
The NEICIT FK-398 features a unique magnetic design for easy attachment and detachment of its various grooming heads. To change a head:
- Ensure the shaver is turned off.
- Gently pull the currently attached head upwards to detach it from the shaver body. The magnetic connection will release.
- Align the desired head (shaver, hair trimmer, or nose hair trimmer) with the shaver body. The magnetic design will guide it into place.
- Press down gently until you feel a secure magnetic connection.

Figure 4: Magnetic design for easy head attachment.
4. Operating Instructions
4.1 Power On/Off
Press the power button once to turn the shaver on. The LED display will illuminate, showing the current battery percentage. Press the power button again to turn the shaver off.
4.2 Travel Lock
To activate the travel lock, press and hold the power button for 3 seconds. A lock icon will appear on the LED display, indicating that the shaver is locked and will not accidentally turn on during travel. To deactivate the travel lock, press and hold the power button for another 3 seconds until the lock icon disappears.
4.3 Wet and Dry Shaving
The NEICIT FK-398 electric razor is designed for both wet and dry shaving. You can use it for a quick dry shave or with shaving cream/gel for a more comfortable wet shave. Its IPX8 waterproof rating ensures safe use in wet conditions.

Figure 5: The shaver supports both wet and dry shaving.
5. Maintenance
5.1 Cleaning the Shaver Head
Regular cleaning ensures optimal performance and hygiene. The shaver head is designed for easy disassembly and quick cleaning.
- Ensure the shaver is turned off and unplugged.
- Detach the shaver head from the body as described in Section 3.2.
- Rinse the shaver head under running water to remove hair clippings and debris. The IPX8 waterproof design allows for thorough rinsing.
- For deeper cleaning, you can use the included cleaning brush to remove stubborn hair from the blades.
- Allow the shaver head to air dry completely before reattaching it to the shaver body or storing.

Figure 6: The shaver head is IPX8 waterproof and can be rinsed under water.

Figure 7: Easy disassembly and quick cleaning of the shaver head.
6. Troubleshooting
This section provides general troubleshooting tips. For specific issues not covered here, please refer to the manufacturer's website or contact customer support.
- Shaver not turning on: Ensure the shaver is charged. Check if the travel lock is activated (a lock icon on the LED display). Deactivate the travel lock by pressing and holding the power button for 3 seconds.
- Reduced shaving performance: Clean the shaver head thoroughly to remove accumulated hair and debris. Ensure the blades are not damaged. Consider replacing the shaver head if performance does not improve.
- Unusual noise during operation: Detach and reattach the shaver head to ensure it is properly seated. Clean the head to remove any obstructions. If the issue persists, discontinue use and contact support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | FK-398 |
| Package Dimensions | 6.65 x 3.7 x 2.52 inches; 9.91 ounces |
| Batteries | 1 A batteries required. (included) |
| Battery Life | 2 Hours |
| Blade Material | Stainless Steel |
| Head Type | Foil |
| Battery Description | Integrated Rechargeable Lithium-Ion Battery |
| Waterproof Rating | IPX8 |
8. Warranty and Support
For detailed warranty information, product registration, or customer support, please refer to the official NEICIT website or the documentation included in your product packaging. Contact information for support services can typically be found there.