Pro's
You can unlock it in the dark

Con's
Combo is pre-set at factory; no way to reset it. Open the package, test the lock, and then lose the little tab with the preset combo printed on it and the lock is worthless.
Feels light and cheap. Better locks at similar prices are available.
Each number can only be used once.
Not clear if the push numbers are sequential. If they are not, then there is less than 400 possible combinations.

I use this for my gym locker. Too lightweight to provide much protection, but OK for what I use it for. Easy to use. Combination is not user resettable.

Needed a lock for the gym locker that I could open without reading glasses. This is pretty cheaply made. Feels sort of like tin instead of something more substantial like steel. It not only requires pressing 5 number but then you have a to slide a lever to open it. The mechanism has jammed up on me after only 2 weeks of very light use and now wont close fully. It seems needlessly complicated. It might be adequate to lock up your wet towel and deodorant but I would not trust it to secure anything of value.

Really giving this product Zero stars!! My first lock purchase of this make and model lasted 2 years, jammed and had to be removed with bolt cutters. I didn't think that was too bad, so I purchased another and it jammed in 6 weeks! That is 2 weeks longer than the allowed 30-day window for returns via Amazon. However the packaging says it has a "Lifetime Guarantee" for the cost of postage plus inclusion of $2.00 postage for the replacement. I will return the useless lock to "Guard Security" in hopes of a longer 'Lifetime' than 6 weeks, but I'm not optimistic. You might want to try a different brand.

Push button locks can be handy for low security uses. Handy if you want to share combo with others. Also, good for visually impaired because can be opened by feel. Too lightweight for me to buy again.