battery replacement?

My TIMEX IRONMAN Triathalon 30 lap died over a year ago. I printed the instructions on how to change the battery but I misplaced them during a move. Anyway, I purchased a DURACELL DL 2025, couldn't find CR 2015, manage to replace it but the watch will not turn on. The + sign is on top. What is my next move?
Thank you for considering this question.
Jorge of Cooper City, Fl