Sun CompanyOutsider - 4-in-1 Survival Multi-Tool | Compass, Thermometer, Whistle, and Fire Starter in a Compact Zipper Pull | Outdoor Gadget for Backpacking, Camping, or Survival Situations

The absolute best thermometer i have, and i have several. Usually the thermometers are about 5 degrees off when they are cheap. Not this one, it's absolutely spot on to a single degree.

Very small size, but does the job as for as the compass, thermometer and fire starter goes. However, the whistle does not work properly. I both 2 of these and both whistles (sucks not blows). There is a very weak sound that comes from them, no matter how hard or soft you blow or the angle you blow. If your main reason for geting this is the whistle, stay away, you will do better yelling HEEELLLLLLP!!!

The thermometer was tested in two separate freezers and two separate refrigerators to assess operating temperatures. I'm satisfied it gave me reliable readings, after which it conformed to room temperature readings inside my home taken from another unit. It is quite sensitive to the heat of your hand. Compass is very small and will get hung up if not level. The ferro rod and the striker are quite small for my large hands. One could easily fumble and lose the striker in the field. The whistle operates with gentle blowing only, not strong or hard. It's a nice little backup for the glove box of the car or attached to a jacket zipper on a hike. It's not meant to be a primary.

Had an item something like this before, about the same size and form factor, but with just the thermometer and compass. The addition of a fire starter and whistle sounded intriguing, so I ordered one.Pros:-It has a thermometer, compass, and emergency fire starter. It also has a whistle, but see the Cons below.-The serrated edge striker works well with the ferrocene rod. I was surprised how far it throws sparks.-It's compact, battery-free, and low-tech. Don't underestimate the value of having an ambient temperature reading without having to reach for a phone or other electronic device.Cons:-The whistle is a joke. When you blow, it does emit a tone, but much too high pitched and too low in volume to be heard. Might attract dogs, but useless to signal for help. Maybe it's a special frequency for rescue dogs?-Both the ferrocene rod and the striker contain iron and therefore attract the compass. You need to remove both to avoid interference. The metal split ring does not attract the compass.-If this is jolted around enough, for instance on a keychain, the thermometer liquid may separate into parts, like any other spirit-filled thermometer. To fix it, submerge it into a coffee mug of hot (> 120 °F) water. Make sure to keep it upright.-The compass does not have a correction for magnetic declination. This is to be expected for a compass of this size. Moreover, this is not intended to be your primary compass.Verdict:Of the four devices that it boasts, only three are functional. Nonetheless, this is a great, low-tech device to use for backup. Hang it on your pack.

I only bought it for the thermometer but glad to have each tool. The whistle is a little weak and probably better off just using your mouth. Thermo seems to be accurate, flint and steel makes a sweet spark, and the compass is spot on. I'm a numbers guy so having the temperature is very important for me especially testing sleep systems and knowing where I'm comfortable in what arrangement. I would definitely recommend this to others.(22 grams with key chain, if that helps anyone)

What can you expect for 12 bucks, so I'm not really super bummed, but the whistle and the flint/steel really don't work at all, so don't get your hopes up. It was actually sort of comical how crappy the flint was since I'm a very experienced welder and mechanic who could barely get a spark out of it using extra tools in my shop. There's no way you're going to get it to work using the steel that came with it, or even a hunting knife.The whistle is just barely loud enough to make someone in the other room maybe look up and say "what are you doing?" Don't expect it to flag down any rescuers.I'm doing a 24 day ultra light weight hike and I was looking for an opportunity to eliminate gear, so I was hoping the 4 components might work; allowing me to combine at least three. The only components that may be good are maybe the thermometer and compass.

The compass doesn't work properly. It points north in every direction you turn it. It might have something to do with the metal ring or firestarter.

It’s a handy tool if you need a fire! My husband started one for us with it! I like to know the temperature outside too. I like the whistle feature and compass too if I were to need them.