Product description\r\n\r\n\r\nHow to extend the life of the wireless earphones? Our Bluetooth earphones are made of plastic and leather material. In order to extend the life of the product, before charging the earbuds, please remember to wipe the sweat on the charging port of the earbuds with a cloth, and then put it in the charging case. After exercise, sweat can easily enter the charging port of the earbuds. If the sweat on the earphones charging port cannot be cleaned, the earphones will easily electrolyze when recharging, making it difficult to charge the earphones. Just received the Bluetooth headphones, please remove the transparent protective film at the charging place of the headphones, then you can charge for them. Product Parameters: Model: ISENPENK T03 Earphone Earphone Battery: 45mah Charging Case Battery: 400mah Charging time: 1 hour Playtime: 8-10 hrs. Standby time: 7-10 days Charging Voltage/Electricity: 5V/1A Operating Range: approx. 10m Warm Tips: 1) Touch panel can be very sensitive, please touch the earbuds softly only when using, no need to tap hard or might cause unnecessary error. 2) If you have any questions, please contact us in time.\r\n\r\n\r\nSafety Warning\r\n\r\n\r\nIf you encounter any problems during the use of the product, please contact our after-sales team for effective help via email: [email protected].\r\n\r\n\r\nLegal Disclaimer\r\n\r\n\r\nIf you encounter problems during using the product, please contact our After-Sales team by e-mail to get effective help: [email protected].