Description
The BB-400 Portable Professional E-File is a powerful, portable electric nail drill designed for precision, efficiency, and long working hours. It features a handpiece connected via cord to a compact main unit powered by a high-capacity 20,000 mAh battery, delivering reliable performance for extended nail services.
With an adjustable speed of up to 40,000 RPM, clearly displayed on a modern LCD screen (00–40 RPM), the BB-400 gives you full control whether you are doing cuticle work, surface refinement, or product removal. Its sleek design, responsive controls, and stable power output make it suitable for professional use.
Usage
Power and Display
- Power on: Long press the power button for 2 seconds
- Power off: Long press the power button for 2 seconds
- Pause: Short press the button for 1 second
Screen Display
- Speed display shows 00–40 RPM, representing 0–40,000 RPM speed adjustment
- Digital power indicator displays remaining battery level when powered on
Battery Information
- Battery capacity: 20,000 mAh
- Full charging time: approximately 3.5 hours
- Battery life: up to 12 hours, depending on speed and usage
Charging
- Equipped with a Type C charging port for convenient charging
Speed Control Dial
- Rotate right to increase speed
- Rotate left to decrease speed
Forward and Reverse Function
- The machine defaults to Forward mode (F) when powered on
- Do not change rotation direction while the machine is running
- Press the Pause button to stop the rotation completely
- Once paused, press the Forward and Reverse button to switch between Forward (F) and Reverse (R) modes
Handpiece
- Ergonomically designed for comfortable and controlled use during services
Nail Bit Lock System
- Turn left to loosen and remove the nail bit
- Turn right to securely lock the nail bit in place
Setup
- Connect the handpiece securely to the connection port on the main unit before powering on
Care
Bit Replacement and Cleaning
- Before replacing nail bits, make sure to clean any dust around the socket
- This helps prevent dust from entering the handpiece, which may cause noise, vibration, or internal damage
Handle With Care
- The internal components of the handpiece are highly precise
- Handle with care and avoid dropping or bumping the handpiece to maintain optimal performance
Water and Moisture Precautions
- During services involving water, do not allow the handpiece to get wet
- At high speeds, moisture may be drawn back into the handpiece, leading to rust and internal damage
- Proper handling and keeping the handpiece dry will significantly extend the service life of the e file