Pen has a nice Schmitt cartridge in it so it writes well. It does stick out of the pocket a little high due to the flashlight. The button for the flashlight is fairly easy to accidentally turn on but it’s pointing up if it’s in a shirt pocket so it’s easy to see if it’s on. The flashlight isn’t super bright, was hoping for more light. It has three modes bright, dim and flashing. Coloring on the pen if good. Nice pocket clip. Holds strong and easy to put pen into pocket. Does have a glass breaker on the opposite end of the pen. Haven’t tried it.