I can't find the item number. I have an energizer 'tactical' (in other words flat black lol) single AAA battery flashlight found on clearance at Target. this model seems to have been discontinued; it's a shame, as it's a lot of bang for the buck. The output is rated at 50 lumens, it's been through the wash at least twice and survived perfectly (upon opening, the inside was found completely dry), and it was under $20 before the sale. It fits nicely into a pocket, being a bit thicker but shorter than a gel pen.

It's a shame it was discontinued; it seems there wasn't a direct replacement in the model line.