Please find a brief guide below of how long it takes to charge the earbuds and the case along with the amount of playing time you should expect.
Case charging time
Empty to 20% (approx. 8hrs playtime capacity in the case to charge earbuds): 15 mins
Empty to 40% (approx. 16hrs playtime capacity in the case to charge earbuds): 30 mins
Empty to 80% (approx. 29hrs playtime capacity in the case to charge earbuds): 60 mins
Empty to 100% (approx. 36hrs playtime capacity in the case to charge earbuds): 90 mins
Earbud charging time
Empty to 20% (approx. 2hrs playtime): 15 mins
Empty to 50% (approx. 4hrs playtime): 30 mins
Empty to 80% (approx. 7hrs playtime): 60 mins
Empty to 100% (approx. 9hrs playtime): 90 mins
For guidance on charging your Melomania Touch product, see this article.