Thank you for viewing! m(_ _)m 【One-button, touch-式 easy operation】Take it out of the charging case, and the indicator light on the main unit will display orange, automatically turning on within 5 seconds, and then simply place it in your ear to complete the operation. ◎ Equipped with a high-performance chip, it reduces noise by approximately 60% while amplifying sound up to 50 times! Simple operation for the elderly! You can adjust the volume in 4 levels by lightly touching the volume control button (with a beep sound that changes depending on the level), easily setting the appropriate volume according to the actual situation. ◎ Compatible with both left and right ears, stress-free wearing! You can put it on immediately without hesitation even in the dark, and there is no need to distinguish between left and right. The in-ear design with zero interference with glasses and masks smartly reduces the hassle of daily life, realizing comfort for long-term continuous wearing.