We recommend that you charge your Beoplay H9 3rd Gen before using them for the first time.
Charging your Beoplay H9 3rd Gen
• Connect the included USB cable to your Beoplay H9 3rd Gen and to a charging adapter, and connect the charging adapter to a power supply.
• After charging your H9 3rd Gen for 20 minutes, they're ready for the first-time setup.
• Total charging time: 2.5 hours using the included USB cable.
Note: A charging adapter of a maximum of 5V / 3A can be used to charge your Beoplay H9 3rd Gen.
DO NOT attempt to plug your Beoplay H9 3rd Gen flight adapter into a power socket as this may cause serious damage to your headphones