I just don't use it. It must go to someone who will use it. This Gossen Color Pro F3 meter is "like new". I has its instruction card, instructions on the back of the meter, both white disks, and Gossen case. It is all here and works fine. How about $400 plus shipping/insurance which I estimate would be $11 in the USA, plus paypal fees. I also have a fresh 9v battery which I will include. 3% to APUG.