USB rechargeable electric eraser comes with a built-in 500mAh lithium-ion battery which is recharged by USB for convenience and long lasting charge. No need to change batteries. Includes a USB charging lead and 20 eraser refills, (10 large erasers 5mm & 10 extra fine eraser 2.4mm diameter). The extra fine eraser is perfect for fine hair line erasing for detailed artwork and technical drawing.The function button is designed to push on and off when required, allowing your hand to hold freely for maximum control. Suitable for left and right hand use. Erases quickly and precisely. Non abrasive with circular motor movement.

The History of Derwent goes back to 1916 in Keswick, England, when it was known as The Cumberland Pencil Company.  But the tradition of pencil making in the area goes back to 1832.  With a new factory opened in Lillyhall, England in 2008, Derwent looks to continue this heritage far into future and continue making most of their products in the UK.  They have a long history of safety and innovation, each product is subject to rigorous testing, for strength and lightfastness.  All Derwent products are non-toxic and some are even vegan.