I bought a couple of inexpensive flashlights off AliExpress. The same model show on Ebay at lower prices if you are bidding and higher prices if you are buying out right.
On Ali the least expensive are $3.17 including shipping and on Ebay $3.55.
The Ebay item number is
eBay item number:
272073325487On Ali look for " diving flashlight."
Do not pay much attention to the listed brightness. They are bright and I might believe 400 lm, but not anything higher than that.
I like them because they use 4 AA batteries and are kind of a medium size. The battery life should be good. Suppose to be 100 hours.
And they really are waterproof. The on of switch is magnetically controlled so there is no metal exposed to the weather.
They may not be the best , but they are a good value for a flashlight to have in the glove compartment or hanging next to the basement stairs. Or a back up light for caving.
Dan