Polaris Karat diopter If you're thinking that sounds

If you're thinking that sounds like a regular messenger bag

the rear screen has been replaced and is the usual black

The included lens is a clean 80mm f2

This Asahi extension tube set includes three M42 thread-mount extension tubes: roughly 9mm

Polaris Karat diopter If you're thinking that soundsThe Polaris Karat is a capable modern lightmeter for flash, incident, or reflected light measurement. It has a large, easy to read colour screen and an interface that is if not 100% intuitive at least easy enough to figure out. This one is in good cosmetic condition overall, with some scuffing and wear from use and handling. Tested accurate.