Original Rechargeable Lithium Battery, Pack for & Inf Rechargeable Earbuds

Description

Fully charged before first use. How to charge? * Battery installation Install an optional lithium battery as shown. * Close the battery cover until it clicks into place. * Battery charging Insert the cable of the 3.5mm male jack connector into the charging hole at the bottom of the hearing protection. * Connect the other end of the cable to a USB power source to start charging. If you have any questions, please feel free to contact us. We are happy to serve you and will reply you within 24 hours.