Black 4D Mag-Lite

It's a Mag. 4D is a bit long, but it's still within reason.

This particular 4D Mag was purchased with a MagLED module installed. There is an enormous amount of information available on these things, so I'll be brief:

Below, you can see the Mag body with a D cell poking out, the tailcap, the tailspring, the MagLED emitter module, the bulb collar ring, the head, the reflector, the window, the bezel, and a belt loop ring holster. The ring holsters are sold separately.

It pulls 0.75A at 5.2V, for 3.9W of power consumption.

Once again, it's a Mag. The MagLED module is much better than the stock Krypton bulb.