1. Introduction
Thank you for choosing the Professional 6-in-1 Waterproof Hair Clipper & Grooming Kit. This versatile device is designed to meet all your grooming needs, offering precision and convenience for various hair styles and body areas. With its multiple attachments and waterproof design, you can achieve a professional look from the comfort of your home.
2. Safety Instructions
- Read all instructions before using this appliance.
- Keep the appliance away from water when charging.
- Do not immerse the main motor body in water, even though the cutter heads are washable.
- Ensure the appliance is fully charged before first use.
- Keep out of reach of children.
- Do not use if the appliance or charging cable is damaged.
- Avoid using the appliance on irritated skin or open wounds.
- Always turn off the appliance before attaching or detaching accessories.
3. Package Contents
The FK-8688T grooming kit includes the following items:

Figure 1: Complete Packing List
- Packing Box
- Hair Clipper (Main Unit)
- Razor Head (Micro Shaver)
- U-shaped Knife (Precision Trimmer)
- Engraving Knife
- Razor (Design Trimmer)
- Nose Hair Device
- Limiting Combs (3mm, 6mm, 9mm, 12mm)
- Comb
- Base (Charging/Storage Stand)
- Cleaning Brush
- Data Cable (USB)
- Oil Bottle
4. Product Overview
The FK-8688T is a versatile grooming tool featuring a main unit with a digital display and interchangeable heads for various functions.
Main Unit
The main unit features a power button and a digital display that shows the remaining battery percentage. It houses a high-speed, low-noise rotary motor for efficient trimming.

Figure 2: Main Unit and Stand
Interchangeable Heads
- Full-size Hair Clipper (T-knife): Ultra-thin blade for trimming and outlining, suitable for all types of coarse and hard hair.
- Precision Trimmer (U-shaped knife): Features a rounded corner design for quick and precise shaving.
- Micro Shaver (Razor Head): Equipped with an up-and-down floating knife net for a deep, close shave.
- Body Hair Knife: Designed to remove a wide range of thick and thin body hairs.
- Nose Hair Device: Provides 360° safe nose shaving without hurting the nasal cavity.
- Engraving Knife: Used for detailed styling and trimming various patterns on the head.

Figure 3: All Interchangeable Heads
Guide Combs
The kit includes four limiting combs (3mm, 6mm, 9mm, 12mm) to achieve various hair lengths, and one adjustable comb for flexible styling.
5. Setup
5.1 Charging the Device
- Connect the USB data cable to the charging port at the bottom of the main unit.
- Plug the other end of the USB cable into a compatible USB power adapter (not included) or a computer USB port.
- The digital display on the main unit will show the charging progress. A full charge takes approximately 2 hours and provides about 80 minutes of continuous use.
- Do not charge the device in wet conditions.

Figure 4: Charging the Hair Clipper
5.2 Attaching and Detaching Heads
- Ensure the main unit is turned off before changing heads.
- To attach a head: Align the desired head with the main unit and gently push until it clicks into place.
- To detach a head: Hold the main unit firmly and pull the attached head upwards to release it.
5.3 Attaching Guide Combs
- Select the appropriate guide comb for your desired hair length.
- Slide the guide comb onto the full-size hair clipper or precision trimmer head until it securely locks.
- To remove, gently pull the comb away from the head.
6. Operating Instructions
6.1 Power On/Off
Press the power button located on the front of the main unit to turn the device on or off. The digital display will illuminate when the device is on.
6.2 Using Different Attachments
- Hair Clipper (T-knife): Use for general hair cutting. Attach a guide comb for desired length or use without for close trimming and outlining.
- Precision Trimmer (U-shaped knife): Ideal for shaping beards, sideburns, and achieving clean lines.
- Micro Shaver: For a smooth, close shave on smaller areas or to finish edges.
- Body Hair Knife: Use for efficient removal of body hair.
- Nose Hair Device: Gently insert the trimmer tip into the nostril or ear canal and move it in a circular motion to trim unwanted hair.
- Engraving Knife: For intricate designs and detailed styling.

Figure 5: Usage Examples
Video 1: Product Demonstration and Features Overview
7. Maintenance
7.1 Cleaning
- Turn off the appliance and detach the cutter head.
- Use the provided cleaning brush to remove any loose hairs from the blades and the inside of the head.
- Rinse the detached cutter head under running water. The heads are IPX7 waterproof and can be washed directly.
- Important: Do not rinse the main motor body under water. Wipe it with a damp cloth if necessary.
- Allow the cutter head to air dry completely before reattaching or storing.

Figure 6: Rinsing the Cutter Head
7.2 Oiling the Blades
After cleaning and drying, apply a small drop of the included lubricating oil to the blades. Turn on the trimmer for a few seconds to distribute the oil evenly. This helps maintain blade sharpness and ensures smooth operation.
7.3 Storage
Store the grooming kit and all its accessories in the provided base or a dry, safe place when not in use. Ensure the device is clean and dry before storage.
8. Troubleshooting
- Device not turning on: Check if the battery is charged. If not, connect it to the charger and allow it to charge for at least 30 minutes before attempting to turn it on again.
- Poor trimming performance: Ensure the blades are clean and free of hair residue. Apply a drop of lubricating oil to the blades. Check if the correct attachment head and guide comb are securely in place.
- Device not charging: Verify that the USB cable is properly connected to both the device and the power source. Try a different USB port or power adapter.
- Excessive noise or vibration: Turn off the device and check if any hair or debris is lodged in the blade mechanism. Clean and oil the blades. If the issue persists, contact customer support.
9. Specifications

Figure 7: Product Parameters
| Attribute | Value |
|---|---|
| Model | FK-8688T |
| Product Name | Hair Clipper Set |
| Voltage | 110-240V 50/60Hz |
| Battery Type | Li-ion Battery, 600 mAh |
| Charging Time | 2 Hours (Approx) |
| Running Time | 80 Minutes (Approx) |
| Waterproof Class | IPX7 |
| Machine Material | ABS + POM |
| Motor Type | ROTARY |
| Blade Material | Carbon |
| Power Type | Mains operation (Charging mode) |
| Maximum Cutting Length | 11 - 20 mm |
| Minimum Cutting Length | less than 0.5mm |
| Length Adjustment Method | Change of nozzles / Guide Combs |
| Purpose | For nose and ears, For the bikini area, For beard and mustache, For body, For eyebrows, For the head |
| Certifications | CE |
| Bare Metal Weight | 135.7g |
| Package Dimensions | 25 x 18.8 x 7.7 cm |
| Package Weight | 553.1g |
10. User Tips
- Start with Longer Lengths: If you are unsure about the desired hair length, always start with a longer guide comb and gradually reduce it until you achieve your preferred style.
- Regular Cleaning and Oiling: To ensure optimal performance and extend the lifespan of your trimmer, clean and oil the blades after every few uses. This prevents dulling and maintains smooth operation.
- Full Charge for Best Performance: Always ensure the device is fully charged before a grooming session to avoid power loss mid-use, which can lead to uneven cuts.
- Dry Hair for Precision: For most trimming tasks, especially hair and beard, dry hair is easier to cut precisely. Use wet trimming for body hair or for easier cleanup.
11. Warranty & Support
For any questions, concerns, or technical support regarding your FK-8688T grooming kit, please contact the seller directly through your purchase platform. Keep your purchase records for reference.