Sharpens most standard 6-8mm pencils, including colored pencils, in 3-5 seconds Built-in 2000mAh rechargeable battery supports up to 600 sharpenings per charge Recharges in about 2.5 hours via included USB-C cable Three adjustable sharpening settings for sharp, medium, or blunt points Automatic start and stop to prevent over-sharpening Measures 3.5″ x 3.5″ x 3″ with a non-slip base