The battery life of the headphones is also very convenient. After being fully charged, I can use them for two or three days without needing to recharge. With the charging case included, the battery life lasts up to 36 hours. Even when traveling, there's no need to worry about running out of power. During my last trip abroad, I listened to music and used the translation function all day long without paying attention to the battery level. Its waterproof rating reaches IP7. Once I accidentally wore it in the rain, there was no damage afterwards. It still functions normally and the quality is extremely reliable.