Introduction
Thank you for choosing the MelodySusie SM220G Cordless Nail Drill. This pen-shaped electric nail file is designed for efficient and precise nail care, offering stepless speed adjustment and a portable, rechargeable design. This manual provides essential information for safe and effective use, maintenance, and troubleshooting.
Important Safety Precautions
- Always wear safety glasses when operating the nail drill to protect your eyes from flying debris or dust.
- Exercise caution around the rotating drill bit and motor to prevent burns or injury.
- Keep the device clean and store it in a dry, safe place when not in use.
- Do not disassemble or modify the device. Contact customer support for repairs.
- Keep out of reach of children.
- Ensure the power adapter is compatible with the device's specifications to avoid damage.
- Avoid using the drill on damaged or infected nails.
Package Contents
Please check the package to ensure all items are present:
- MelodySusie SM220G Cordless Nail Drill
- 6 Nail Drill Bits (Cone Bit, Small Barrel, Safety Bit, Round Bit, Needle Head, Mandrel)
- 25 #180 Grit Sanding Bands
- USB-C Charging Cable
- User Manual

Product Overview
The SM220G features a pen-shaped design with an LED display for real-time speed and battery status. It incorporates a brushless motor for quiet operation and a silicone ring on the speed knob for smooth adjustment.


Setup
1. Charging the Device
Before first use, fully charge the nail drill. Connect the USB-C charging cable to the drill and a suitable power adapter (not included). The LED display will indicate charging status. A full charge takes approximately 1.5 hours and provides 6-8 hours of continuous use depending on speed settings.

2. Inserting a Drill Bit
- Ensure the drill is turned off.
- Gently push the desired drill bit into the chuck until it is securely seated. Do not force the bit.
- To remove, pull the bit straight out.

Operating Instructions
1. Power On/Off
Press and hold the power button (usually marked with a power symbol) for 3 seconds to turn the drill on or off. The LED display will illuminate when powered on.
2. Adjusting Speed
The SM220G features stepless speed adjustment up to 30,000 RPM. Rotate the silicone ring on the speed knob to increase or decrease the speed. The current speed level will be shown on the LED display.
3. Changing Rotation Direction (F/R)
Press the F/R button once to switch between forward and reverse rotation. The direction will be indicated on the LED display.
4. Pause Function
Press the dedicated pause button located on the top of the grinder to temporarily stop the drill's rotation. Press it again to resume.
5. Stall Protection Technology
The motor is equipped with stall protection. If excessive pressure is applied, causing the bit to stall, the motor will automatically stop to prevent damage. Briefly press any button to restart operation.

Maintenance
1. Cleaning
After each use, gently wipe the drill body with a soft, dry cloth. Use a small brush to clean any dust or debris from the chuck and drill bits. Do not use harsh chemicals or immerse the device in water.
2. Storage
Store the nail drill in a cool, dry place away from direct sunlight and moisture. Keep it in its original packaging or a protective case to prevent damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Drill does not turn on. | Low battery or not charged. | Charge the device fully. |
| Drill stops during use. | Stall protection activated due to excessive pressure. | Reduce pressure and briefly press any button to restart. |
| Bit is loose or falls out. | Bit not inserted correctly or chuck is worn. | Ensure bit is fully inserted. If issue persists, contact support. |
| Unusual noise or vibration. | Damaged bit or internal issue. | Replace the bit. If noise continues, discontinue use and contact support. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | SM220G |
| Maximum Rotational Speed | 30,000 RPM |
| Input Power | 12 Watts |
| Torque | 220 gf·cm |
| Speed Mode | Stepless Adjustment |
| Motor Type | Coreless Motor |
| Battery Average Life | 7 Hours (continuous use) |
| Charging Time | Approx. 1.5 Hours |
| Power Source | Battery Powered |
| Material | Aluminum Alloy |
| Item Weight | 0.29 Kilograms (approx. 10.23 ounces) |
| Package Dimensions | 8.5 x 2.64 x 1.69 inches |

Warranty and Support
MelodySusie products are designed for quality and reliability. For warranty information, product support, or to purchase replacement parts, please visit the official MelodySusie website or contact their customer service department. Keep your purchase receipt as proof of purchase for warranty claims.
Contact Information: Please refer to the official MelodySusie website or the contact details provided with your product packaging for the most up-to-date support information.







