1. Introduction
The RAXMETRY BG400BK is a versatile 3-in-1 electric body hair trimmer designed for comprehensive grooming. It features interchangeable heads for various trimming needs, including body, beard, and nose hair, offering a precise and comfortable experience. This manual provides essential information for safe and effective use, maintenance, and troubleshooting.

Figure 1: RAXMETRY BG400BK 3-in-1 Electric Body Hair Trimmer with included accessories.
2. Product Features
- VERSATILE GROOMING: 3-IN-1 design allows for precise grooming of both body and armpit/nose hair. Perfect for trimming hair, beard, nose hair, back hair, chest hair, groin hair, pubic hair, ball hair, bikini hair, and underarm hair. Two combs (3/6/9/12mm) ensure safe and easy body hair trimming.
- UNMATCHED PRECISION: Experience a close, comfortable shave without any pulling or irritation thanks to the beveled R-shaped blade and skin-friendly ceramic. Perfect for getting a smooth finish on rough, curly hair without any inconvenient edges.
- WATERPROOF & EASY TO CLEAN: Featuring an IPX7 design, this trimmer allows for hassle-free cleaning. Detachable blades make maintenance a breeze. Use it wet or dry, in or out of the shower for ultimate convenience. The sleek and ergonomic design ensures comfortable handling and a stylish look.
- USB RECHARGEABLE & LONG-LASTING: Comes with a USB (Type-C) cable and offers up to 120 minutes of battery life after a full charge. Actual usage duration may vary depending on hair type and shaving frequency.

Figure 2: Internal components highlighting the stainless steel, copper motor, and ceramic blade for efficient and quiet trimming.
3. Package Contents
Your RAXMETRY BG400BK trimmer package includes the following items:
- Hair trimmer x 1
- Body trimmer head x 1
- Narrow trimmer head x 1
- Nose & ear trimmer head x 1
- Body trimmer comb (3-6mm/9-12mm) x 2
- Narrow trimmer comb (2mm) x 1
- Charge cable x 1
- Clean brush x 1
- Operating Instructions x 1

Figure 3: Visual representation of all components included in the product package.
4. Setup
4.1 Charging the Trimmer
Before first use, fully charge the trimmer. Connect the provided USB-C cable to the charging port on the trimmer and to a compatible USB power source (adapter not included). The battery indicator lights will show the charging status. A full charge provides up to 120 minutes of use.

Figure 4: The trimmer's USB-C charging port allows for convenient charging from various sources.
4.2 Attaching and Detaching Trimmer Heads
To change a trimmer head, align the desired head with the trimmer body and twist gently until it locks into place. To detach, twist in the opposite direction and pull the head off. Ensure the trimmer is turned off before changing heads.
Video 1: Demonstration of attaching and detaching the various trimmer heads for the RAXMETRY BG400BK.
5. Operating Instructions
5.1 General Trimming
Turn on the trimmer by pressing the power button. For body and beard trimming, select the appropriate trimmer head and attach a guide comb if desired. Gently press the trimmer against the skin and move it slowly against the direction of hair growth. Stretch the skin taut with your free hand for a smoother trim.

Figure 5: The trimmer is designed for use on various body parts, including nose, ears, back, shoulders, chest, abs, underarms, arms, groin area, and legs.
5.2 Using Guide Combs
The trimmer comes with two body trimmer combs (3-6mm and 9-12mm) and one narrow trimmer comb (2mm). These combs attach directly to the trimmer heads to control hair length. Select the desired comb and snap it onto the trimmer head before use.

Figure 6: Guide combs allow for precise control over hair length during trimming.
5.3 Nose and Ear Trimming
Attach the nose & ear trimmer head. Carefully insert the trimmer tip into your nostril or ear canal. Move the trimmer gently in a circular motion to trim unwanted hair. Do not insert too deeply.

Figure 7: The specialized head for safe and effective trimming of nose and ear hair.
Video 2: Demonstration of the 3-in-1 trimmer heads in action for various grooming needs.
6. Maintenance
6.1 Cleaning the Trimmer
The RAXMETRY BG400BK is IPX7 waterproof, allowing for easy cleaning under running water. Detach the trimmer head and rinse it thoroughly. Use the provided cleaning brush to remove any trapped hairs from the blades and the trimmer body. Ensure the trimmer is completely dry before reattaching heads or storing.

Figure 8: The IPX7 waterproof design allows for easy cleaning of the trimmer under running water.
6.2 Blade Care
The ceramic blades are designed for durability and sharpness. Avoid dropping the trimmer or applying excessive force to the blades to prevent damage. Periodically check the blades for any signs of wear or damage. Replace heads if necessary to maintain optimal performance.
Video 3: Highlighting the durability and heat resistance of the ceramic blades.
7. Safety Information
- Do not submerge the shaver in water.
- Keep the charging port dry; if the port is wet, the device will not be able to charge.
- Always handle the shaver with care to avoid injury from the sharp blade.
- Ensure the trimmer is turned off before attaching or detaching heads or cleaning.
- Keep out of reach of children.

Figure 9: Always trim in the correct direction and with proper skin tension to avoid nicks.
8. Troubleshooting
If you encounter any issues with your RAXMETRY BG400BK trimmer, please refer to the following common solutions:
- Trimmer not turning on: Ensure the battery is charged. If the charging port is wet, the device will not charge. Allow it to dry completely before attempting to charge.
- Poor trimming performance: Check if the blades are clean and free of hair. Ensure the trimmer head is securely attached. Blades may need replacement if dull or damaged.
- Skin irritation: Ensure you are using the correct trimming technique (against hair growth, with taut skin). The ceramic blades are designed to be skin-friendly, but sensitive skin may require extra care.
For further assistance, please contact customer service.
9. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 6.14 x 1.06 x 1.46 inches |
| Item Model Number | BG400BK |
| Batteries | 1 Lithium Ion batteries required (included) |
| Manufacturer | RAXMETRY |
| Recommended Uses | Beard, Chest, Leg, Nose, Pubic, Under Arm |
| Color | Black |
| Item Weight | 5.29 Ounces |
| Power Source | Battery Powered |
10. Warranty and Support
The RAXMETRY BG400BK trimmer comes with a one-year warranty. For any product-related inquiries, technical support, or warranty claims, please contact our friendly 24-hour customer service team. We are committed to ensuring you receive a high-quality product that meets your expectations.