L/R Bluetooth earbuds have a battery-separated LED display design that will display how much battery is remaining in the charging base. When putting into the case, you can determine when it is best to charge.Wireless earbuds have a built-in 2000mAh rechargeable battery charging case, can play for 4 hours on a single charge, and a portable charger box recharge can provide 90 hours of playback.They can be charged automatically once the earbuds are put in the charging case. You can go out for fun without worrying about a battery shortage; your needs are met from the start of the day to its end. Ensure a great experience with fast, stable, and efficient transmission. When you take the left and right Bluetooth headphones out of the charging box, "F9" automatically appears on your smartphone. Keep your mind focused on calls or music without worrying about audio dropouts.

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