Introduction
Thank you for choosing the Sejoy SHARP 3S Cordless Professional Hair Clipper. This manual provides essential information for the safe and effective use, maintenance, and care of your new hair clipper. Please read these instructions thoroughly before first use and keep them for future reference.
Important Safety Information
Caution:
- Avoid direct contact with eyes, skin, and water.
- This appliance is not intended for use on children.
- Always follow cleaning and maintenance instructions to prevent skin irritation or injury.
Warnings:
- Product packaging may contain information that differs from what is presented here.
- Always read the label, warnings, and instructions provided with the product before use or consumption.
Package Contents
Please check the package for the following items:
- Sejoy SHARP 3S Hair Clipper (Main Unit)
- Removable Blade Head (1 pre-installed, 2 replacements, total 3 blades)
- Adjustable Guide Comb (1-10mm)
- Adjustable Guide Comb (11-20mm)
- USB Type-C Charging Cable
- Cleaning Brush
- Lubricating Oil
Product Features
- Cordless Convenience: Offers maximum flexibility and precision without cable limitations.
- Removable Blade System: Features a detachable blade head with three blades (one pre-installed, two replacements) for consistent, clean cuts.
- Precision Length Settings: Two adjustable guide combs (1-10mm and 11-20mm) provide 20 length settings for versatile styling.
- Advanced LED Display: Clearly shows battery status and other operational information.
- Type-C Charging: Modern and convenient charging interface.
- Long-lasting Battery: 800mAh battery provides approximately 90 minutes of continuous use after a 2-hour charge.
- Travel Lock Function: Prevents accidental activation during transport.
- Durable Blade Material: Stainless steel blades for effective and long-lasting performance.

Image: The Sejoy SHARP 3S hair clipper showcasing its main features including stainless head, travel lock, USB charging, wired/wireless use, LED display, and 90 minutes of use time.
Setup and Assembly
Attaching and Detaching Blades
- To Detach: Press the blade teeth with your thumb and push the blade head outwards with force.
- To Attach: Align the cutter head with the slot on the clipper body. Push the cutter head into the slot until it clicks securely into place.

Image: Step-by-step visual guide demonstrating how to remove and install the blade head on the Sejoy SHARP 3S hair clipper.
Attaching Guide Combs
The clipper comes with two exchangeable guide combs for different length settings:
- Comb A: 1-10mm
- Comb B: 11-20mm
To attach a guide comb, slide it onto the blade head until it locks into position. Ensure it is firmly seated before use. The length can be adjusted by rotating the dial on the comb.

Image: The two adjustable guide combs (1-10mm and 11-20mm) for the Sejoy SHARP 3S hair clipper, with a close-up of the length adjustment dial.
Charging the Device
Before first use, fully charge the clipper. Connect the USB Type-C charging cable to the clipper and a compatible USB power source (e.g., car charger, adapter, power bank, PC). The LED display will indicate charging status. A full charge takes approximately 2 hours and provides up to 90 minutes of continuous use.

Image: The Sejoy SHARP 3S hair clipper connected via its Type-C charging port, with the LED display showing battery percentage and charging time information.
Operating Instructions
Power On/Off
Press the power button to turn the clipper on or off. The LED display will illuminate when the device is active.
Adjusting Cutting Lengths
With a guide comb attached, rotate the dial on the comb to select your desired cutting length. The available lengths range from 1mm to 20mm.
Using the Clipper
Move the clipper against the direction of hair growth for an even cut. The clipper is suitable for various applications, including:
- Hair cutting (for professional or home use)
- Beard trimming and shaping
- Edging and contouring
- Creating hair art or fading styles

Image: Examples of the Sejoy SHARP 3S hair clipper in use for professional barbering, home hair cutting, beard trimming, fading, and hair art.
Travel Lock Function
To activate the travel lock, press and hold the power button for 3 seconds. The clipper will lock, preventing accidental activation. To unlock, press and hold the power button again for 3 seconds.
Maintenance and Cleaning
Regular cleaning and maintenance ensure optimal performance and hygiene.
- Remove Guide Comb: Detach the guide comb after each use.
- Clean Blade Head: Use the provided cleaning brush to remove hair clippings from the blade head.
- Rinse Blades: The blade head can be rinsed under running water. Ensure the clipper body does not get wet.
- Dry Thoroughly: Wipe the blade head and clipper body with a dry towel.
- Lubricate Blades: Apply a few drops of lubricating oil to the blades regularly to maintain sharpness and smooth operation.

Image: Visual instructions detailing the five steps for cleaning and maintaining the Sejoy SHARP 3S hair clipper, including removing the comb, brushing, rinsing, drying, and oiling the blades.
Troubleshooting
- Clipper not turning on: Ensure the battery is charged. If the travel lock is active, press and hold the power button for 3 seconds to unlock.
- Reduced cutting performance: Clean the blades thoroughly and apply lubricating oil. Ensure the blade head is correctly installed.
- Clipper making unusual noise: Check if the blade head is properly attached and clean. Lubricate the blades.
- Charging issues: Ensure the USB cable and power source are functioning correctly. Try a different cable or adapter.
Specifications
| Feature | Detail |
|---|---|
| Brand | Sejoy |
| Model Number | SHARP 3S |
| Manufacturer | JOYTECH Healthcare Co.,Ltd |
| Dimensions | 20.6 x 12.3 x 5.7 cm |
| Weight | 300 grams |
| Battery Type | 1 Lithium-ion battery (included) |
| Power Source | Battery powered |
| Charging Interface | USB Type-C |
| Charging Time | Approx. 2 hours |
| Operating Time | Approx. 90 minutes |
| Blade Material | Stainless Steel |
| Max Cutting Length | 20 Millimeters |
| Special Features | Rechargeable, Cordless, LED Display, Adjustable Lengths, Travel Lock |
| Target Audience | Men |
Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or visit the official Sejoy website. Keep your purchase receipt as proof of purchase.





