Vintage Armitron Tasmanian Devil ACME Pocket Watch WB Looney Tunes TAZ 1997

Vintage Armitron Tasmanian Devil ACME Pocket Watch WB Looney Tunes TAZ 1997 Height 1/2” Width 2” Length 18 3/4” The top button to pop that face open works. I cannot get the face to pop open to see the interior of the watch. As it stands now the watch is NOT working. I can’t open the glass face to get to the back so I do not know if it can work or not. Purchasing as is. Sorry I’m not knowledgeable about watches and I know if I try to pry the glass face open I may break it. There is wear and tear to outside. The finish is coming off.