The Autopen is simple, easy, and reliable to use...Automatic insulin deliveryThe conveniently positioned side release button is gently pressed and held to deliver the insulin dose.Less force to deliverAutopen requires the same force to deliver the insulin, regardless of the dose size or pen needle gauge. This force is significantly less than for other insulin pens.Less distance to deliverAutopen’s unique automatic delivery system uses a sidemounted release button which is pushed the same minimal distance to inject, regardless of the dose size and the needle gauge.Improved comfort and controlAutopen’s automatic delivery system enables the hand to be held closer to the injection site, allowing for a more stable injection.Autopen is compatible with most leading brands of pen needle including Unifine Pentips.