1.Portable & Sleek & Cordless:The unique roller design can adjust the speed and direction of rotation, making the operation smoother and more convenient. You may be tired of bulky countertop nail drills that always need to be plugged into a power source.. It is small in size and can be put in a bag, allowing you to enjoy manicures anytime, anywhere. 2.Low Noise & Low Heat & Low Vibration & Safe & Durable: The main body of this electric nail drill is made of high-quality aluminum alloy, and the vent hole design ensures excellent heat dissipation performance and reduces the risk of overheating. It has an improved internal motor to keep noise and vibration low during the manicure process. The shape and ergonomic design of the pen make it easy to hold.