Excellent Nurse Penlight! The light is a LED bulb so it’s very bright. The penlight is made of alloy which makes it lightweight. It also has a clip so that it can be clipped onto a scrub top or the scrub pocket for easy convenience. It has a pupil gauge and a 5cm ruler. It’s a pretty blue color. The button to turn it on and off is on the top and easy to turn off and on. There are no cons to this product.