Luminous 3080 Series

Have had for 3-4 years. Has been a great and TOUGH watch. Some scratching on glass but doesn’t affect vision on watch. Battery is getting weak, sometimes it will work if I click top button but then slows back down. I took my last luminox to a jeweler and they replaced battery free of charge. Should be a cheap fix none the less. Mainly getting rid of because I have a new one. Think the face and casing is 44mm