1. Introduction
Thank you for purchasing the Panasonic ER-GK21-K Body Trimmer. This battery-operated body shaver is designed for men's grooming, offering versatile and gentle hair removal for various body areas, including sensitive zones. Its waterproof design allows for convenient use in the bath and easy cleaning. Please read this manual thoroughly before use to ensure safe and optimal performance.

Figure 1: Panasonic ER-GK21-K Body Trimmer with included accessories.
2. Setup
2.1 Unboxing and Initial Inspection
Carefully remove all components from the packaging. Ensure all listed items are present and undamaged. The package includes the main trimmer unit, various attachments, a cleaning brush, dedicated oil, and a USB-C charging cable.
2.2 Charging the Unit
The Panasonic ER-GK21-K is battery-operated and rechargeable. Before first use, fully charge the trimmer. Connect the provided USB-C charging cable to the port at the bottom of the trimmer and plug the other end into a compatible USB power source. A full charge provides approximately 70 minutes of operating time.

Figure 2: Close-up of the USB-C charging port located at the base of the trimmer.
2.3 Attaching and Detaching Heads
The trimmer comes with several interchangeable heads for different grooming needs. To attach a head, align it with the main unit and twist gently until it clicks into place. To detach, twist in the opposite direction and pull off. Ensure the unit is turned off before changing attachments.
- Nose Hair Trimmer: For precise trimming of nose and ear hair.
- Foil Shaver: For a close, smooth shave on various body parts.
- V-Shape Body Trimmer: Specifically designed for delicate and hard-to-reach areas like the groin and underarms.
- Adjustable Guide Comb: For trimming hair to desired lengths (3 levels: 0.1 inch/3mm, 0.08 inch/2mm).

Figure 3: Nose hair trimmer attachment for the Panasonic ER-GK21-K.

Figure 4: Foil shaver attachment for a close shave.

Figure 5: V-shape body trimmer attachment for sensitive areas.

Figure 6: Adjustable guide comb for length control.
3. Operating Instructions
3.1 Powering On/Off
To turn the trimmer on, press the power button located on the main unit. Press the button again to turn it off.
3.2 General Usage
The ER-GK21-K is designed for full-body grooming, including arms, legs, armpits, chest, and delicate VIO zones. Its rounded blade and safety cut construction ensure gentle shaving without direct skin contact, minimizing irritation.
3.3 Using Attachments for Specific Areas
- For Body Hair: Use the main trimmer blade or the adjustable guide comb. The guide comb offers 3 levels of length adjustment (0.1 inch/3mm, 0.08 inch/2mm) for customized trimming.
- For Sensitive Areas (VIO): Always use the V-shaped head or the skin guard attachment (0.08 inch/2mm) for the genitals and anal area to ensure safety and comfort. Do not use the attachment with wet hair in these areas.
- For Facial Hair/Detailing: The foil shaver attachment is ideal for achieving a close, smooth finish on smaller areas or for detailing.
- For Nose/Ear Hair: The nose hair trimmer attachment provides safe and effective removal of unwanted hair.
3.4 Wet and Dry Use
The trimmer features a fully waterproof design, allowing for convenient use in the shower or bath. This also facilitates easy cleaning under running water. Ensure the charging port cover is securely closed when using in wet conditions.
4. Maintenance
4.1 Cleaning
After each use, especially when used with wet hair, clean the trimmer thoroughly. The entire body of the trimmer can be washed under running water. Use the provided cleaning brush to remove any trapped hair from the blades and attachments. For optimal performance and hygiene, regularly clean the blades and attachments.

Figure 7: Included cleaning brush and comb for maintenance.
4.2 Lubrication
Apply a drop of the dedicated oil (included) to the blades periodically to maintain their sharpness and ensure smooth operation. Refer to the detailed instructions in the full product manual for specific lubrication points and frequency.
4.3 Storage
Store the trimmer and its attachments in a dry place, away from direct sunlight and extreme temperatures. The provided carrying bag is ideal for keeping all components together and protected, especially when traveling.

Figure 8: Carrying bag for convenient storage and travel.
5. Troubleshooting
If you encounter any issues with your Panasonic ER-GK21-K Body Trimmer, please refer to the following common solutions:
- Trimmer not turning on: Ensure the battery is charged. Connect the charger and allow it to charge for at least 30 minutes before attempting to power on again.
- Reduced performance/pulling hair: The blades may be dull or clogged with hair. Clean the blades thoroughly using the cleaning brush and apply dedicated oil. If the issue persists, consider replacing the blade head.
- Unusual noise: Ensure all attachments are correctly secured. Clean and lubricate the blades. If the noise continues, discontinue use and contact customer support.
For more detailed troubleshooting steps, please consult the full instruction manual included with your product or visit the Panasonic support website.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | ER-GK21-K |
| Brand | Panasonic |
| Power Source | Battery Powered (Rechargeable) |
| Battery Life | Approximately 70 minutes |
| Product Dimensions (H x W x D) | 16.1 x 3.1 x 4.4 cm (6.3 x 1.2 x 1.7 inches) |
| Item Weight | 0.1 Kilograms (95 g) |
| Special Feature | Wet Shaving, Waterproof Design, Safety Cut Construction |
| Blade Material | Metal |
| Included Components | Length matching attachment (3mm), Skin guard attachment (2mm), Cleaning brush, Dedicated oil |
7. Warranty & Support
For warranty information, product registration, or customer support, please refer to the warranty card included in your product packaging or visit the official Panasonic website. Keep your proof of purchase for any warranty claims.







