While there is no significant damage to the exterior, there is blue corrosion on the terminals in the battery compartment, so it is being sold as junk. I have cleaned it easily, inserted batteries, and confirmed that it flashes with the test button. The CONTAX TLA 20 strobe has a compact design and supports AUTO mode with a setting range of ASA 100-400. - Model Name: CONTAX TLA 20 - Setting Range: ASA 100-400, 0.5-10m - Modes: AUTO, LO, HI - Test Function: TEST button - Design: Compact design Thank you for looking.