The case carries enough power to charge the wireless earbuds up to 4 times*. To charge them:
1. Place them in the charge case.
2. A red light on the earbuds will indicate charging. When the red light disappears, they are fully charged.
3. Recharge the case if needed.
* Based on 50% volume and 5 charges from the case to the earbuds of 3 hours of play time.