COB Rechargeable Keychain Light

A flat COB strip rather than a single bulb, which is the difference between a narrow beam and a wide sheet of light across whatever you are looking at. It rides on a keyring, so it is the torch you actually have on you.

Charging is by cable rather than by swapping cells, and the run is long enough for the jobs a keyring torch gets: a lock in the dark, the back of a desk, a cupboard with no socket near it. Stated runtime is about three hours.