You need to put it on the charger for at least 2 1/2 hours if it's completely dead. If it still doesn't wake up, take it to an Authorized Reseller/ Apple Store and use one of their chargers to see if it's the watch or your charger.
Nevermind it turned on this morning I guess it was just dead. Lol I got the case from Aliexpress. Why pay $30 for otterbox watch case when I got it for $0.99.