Please see description at http://www.sekonic.com/products/Sekonic%20L-308S%20FLASHMATE.asp
Bought this and never used it. I took the item out of the box,
installed the batteries, tested it out a few times, and ended up not needing it for class I bought it for. Every photog should have one of these! Very helpful when starting to experiment with flashes... Light meter is brand
new. Sells for $189.00 on B&H. Asking $150.00. Make an offer!