Welcome to the store! 1. Rechargeable: The detail eraser has a built-in lithium-ion battery, and this electric eraser can be used multiple times after being charged. Safe and environmentally friendly erasing experience! 2. Ergonomic Design: Instead of a large rectangle, this automatic eraser is ergonomically designed to be more comfortable to hold. 3. Efficient Erasing: The circular motion and powerful motor allow you to erase the target area effectively and precisely. With just a little pressure, you have immense power. 4. Big Button: The large button is more labor-saving; press and hold the large button, rotate it back and forth to clean it, very sensitive. 5. Replaceable Refills: Electric erasers come with replaceable refills, which are convenient for you to replace and use for a long time. Item Type: Electric Eraser Material: Plastic Battery Type: Lithium Battery (Shipped with built-in battery) Battery Capacity: 600 mAh Number of Batteries: One Battery Model: 18650 8 x Eraser Replacement Refill Thin Tips 8 x Eraser Replacement Refill Thick Tips 2 x Thin Rubber Jackets 1 x Charging Cable 1 x Electric Eraser Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!