Mini Circuit Tester Light-Up Tool. Overall in good used condition. Pocket Clip. Wire Lead and alligator clip can be quickly removed to storage in pocket. I just tested it and it lights up as it should without any noted performance issues (see picture.).

Brand: Unmarked
Manufacturer Part Number: Unknown
Volt: 6 Volt & 12 Volt
Features: Analog Display, Light Bulb Test Screwdriver Clear Handle w/ Clip Lead, Pocket Clip, Removable Wire Quick Release