Apple AirPods with Charging Case

These are Apple AirPods 1st generation Model A1620. The charging case uses the lightning port. The ear buds and case charges. But the right one doesn’t have sound coming out. I’ve tried to reset it with my phone and MacBook but it doesn’t seem to work. May be related to new iOS. I’ve sanitized the ear buds and case with a Lysol wipe. Pick up King & Spadina.