Old school headlamp, Swedish army surplus. This is not a toy, unlike many modern plastic trinkets. However it is bulky, simple and reliable, just like army kit usually is.

The package contains:

• The lamp itself. This works by just turning the thing a bit, ON/OFF technology at its best. The bulb might be used up, but spares are available probably at your nearest gas station. If you can't make out the specs, it's 3V 0,3 AMP.
• Adjustable headband.
• Metal battery case (11,5 x 3,5 x 7 cm), with room for three D batteries and clamps for two spare bulbs (bulbs might not be included). There's a leather strap with buttonholes to hang it from anywhere including the headband if you have to, but it should fit in your breast pocket too. Or just slide it on your belt.
• The case is not waterproof, but the amount of "open" rivets on it suggests this is intentional - maybe the water just gets out pretty quickly too? As this is a military item these things have surely been taken into consideration.

No hard data about power output, but compared to modern lamps it's not very much. Enough to see what you're doing and where you are going.

Condition

Used. Other than the bulb, there's not much to go wrong with these, so if it won't light up, get a few new ones and you're good to go for a long while. As a good omen the first one we picked up from the box lit up happily after cramming a few D batteries in the case.