A:Answer "Charging for 10 minutes will provide 3 hours of battery life. Galaxy Buds give you up to 13 hours of play time, with 6 hours of charge in the earbuds, and an additional 7 hours with the charging case. Plus, charging for just 15 minutes will give you up to 1.7 hours of battery life" (Samsung.com).
For the first use, I would say at least 1 hour.