I purchased this new on Amazon, but I'm selling it because it wasn't what I expected. I've only used one black thunder chip, and the rest are unused. Brand: PELCAS Battery Life: 6 Hours Maximum Rotation Speed: 25000 RPM Manufacturer: PELCAS 【Newly Developed Cordless Electric Nail Drill with No Tangling Cord】Supervised by a popular nail artist and highly praised overseas! This cordless electric nail drill allows you to use it anytime, anywhere without worrying about power sources, outlets, or cords. Weighing only 100 grams, it's compact, easy to hold, and easy to handle with one hand, reducing strain on your arms and wrists. Equipped with a large-capacity battery (2000mAh), it can operate continuously for up to 6 hours on a full charge. 【Powerful up to 25000rpm & Forward/Reverse Rotation Function】With a powerful maximum speed of 25000rpm, the rotation speed can be adjusted from 0 to 25000rpm, allowing for efficient nail removal! You can choose from 10 different rotation speeds. The low-speed rotation is suitable for beginners, allowing you to gradually file your nails. It supports forward and reverse rotation, allowing you to switch the rotation direction for use with your right and left hands! 【Unique Dust-Proof Shell】The lightweight design, weighing only 100 grams, and pen shape make it easy to hold and perfect for small hands. It reduces strain on your arms and wrists, making it easy to handle with one hand. It has an LED light at the tip, making it easy to work in dark places and ideal for sanding the details of your nails. The drill attachment has a unique dust-proof shell that prevents shavings, odors, and nail dust from flying into the air, reducing the health risks associated with inhaling dust. 【All-in-One, 10-in-1 Multifunctional Nail Care Set】Accessories: Bits *10, Sanding Bands *60, Cleaning Brush *1 (10 removable nail bits are included.) From shaping and trimming nails to cuticle care and polishing the nail surface, leave all the preparation work before applying gel to the PELCAS electric nail drill. You can save both time and effort compared to manual nail filing. Easily prepare your nails to the optimal condition before applying gel nails, increasing work efficiency.