First of all they list the incorrect size battery in the description. Are they even aware of their own product they're selling? It says the size right on the battery! And that size is not LR44. The screwdriver/bottle opener doesn't stay secured and screwed in. I can't imagine having to unscrew the glass breaker component in a timely fashion in the event of an emergency. But those bad attributes aside, it is a great value for a pen/flashlight/whistle, if only for the extra batteries and ink inserts. Whistle is loud as heck too.This was a gift for my 11 year old daughter who is headed to camp this summer and who loves to read by flashlight at night. She loved the color and all the tools. I wish the different tools could be reassembled in a different order as camp will drown upon the saw and prob glass breaker sections but they are so subtley hidden that no one should be able to tell it comes apart. The metal is high quality and not thin at all. Good buyI could not be happier overall. Purchased for glass break/ink pen features. The whistle and flashlight are the best features. The ink pen refill is so small that this is best for someone who won't often use the pen. It comes with 3 tiny pen refills, so almost what a full size pen would be. Also extra flashlight batteries. I have not looked into cost/availability of ink/battery refills. I got it for myself and the pink color closed the sale for me. There is a square do-it-all device that looks workable. I have not tested the bottle opener or square device so cannot say how strong they are with use. It all looks/feels sturdy. Purchased on sale so no complaints! Update: Have used this for several months. The flashlight was perfect when I lost power a few nights back, used the pen for notes during an unexpected class and just tightened drawer screws in my bureau. Will give these as gifts for Christmas. No searching for a tool. It's all there.Cool gadget. Got it for my elderly dad so he didn't have to go down to the basement Everytime he just needed a screw driver or a simple tool for a simple job. Does the job!I work in a nursing home and when I’m doing rounds I have to check them to see if they are wet or dry instead of turning on a big light and getting them upset. So this flashlight pen is very handy for it to only be a lost cost of 10 dollars!One of the best utility pens out there. Has more features than most and also a great high-vis color in case you drop it.I like always having a flashlight in my pocket that's easy to use vs using my phone all the time. Sometimes I need my hands free and as weird as it sounds, I can hold this in my mouth and have both hands free while working on something. Always having a pen doesn't hurt either, I'm surprised how much I use it now that I have it. The multi-tool is ok, cant say I use it much but I also have a Leatherman multitool with me most of the time. I think it would be better if they replaced that with a fire starter or a place to hold extra batteries for the flashlight. The only downside is that the finish wears off quickly, but It doesn't really bother me. I actually use it so much a purchased another as a gift and they are using it as much as I am!