● Fully wireless in-ear headphones that use Bluetooth technology, eliminating the need for any cables. ● Equipped with an 8.6mm high-power driver, delivering powerful bass and clear high frequencies naturally. ● Continuous music playback time: up to 3 hours. Fully charged from the dedicated charging case in approximately 90 minutes. ● The dedicated charging case can fully charge the earbuds 5 times. Also, fully charging the dedicated charging case takes about 2 hours from a USB power supply. ● The ergonomic design and structure, along with the use of stabilizers, provide a comfortable and secure fit, making them comfortable to wear for extended periods. ● The right channel earbud features a built-in microphone for hands-free calls. ● Equipped with an auto power-off function, with a beep notification when the earbuds' battery is low. ※ This product does not support volume adjustment when paired with a SONY DAP.