3 Lithium Ion batteries required.

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LED Digital Power Display: Wireless earbuds with LED display to clearly show the battery level of the charging case and earbuds.
60 Hours of Playback: Up to 10 hours of listening time on a single earbuds, over 60 hours with charging case.

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Crystal-Clear Sound Quality:Featuring 14.2mm composite titanized diaphragm drivers, J01 wireless headphones can deliver clearer stereo, a wider sound field and deeper bass, making you feel as immersive as on site.
Bluetooth 5.3:Compared with the Bluetooth 5.0, J01 earbuds wireless bluetooth 5.3 has a bandwidth (transmission speed) increased from 1Mbps to 2Mbps, and the transmission distance is increased to 4 times stronger. Supports high-quality sound transmission, more stable connection.