Earplugs, World's Smallest Digital Earplugs QuietOn 4 QuietOn Equipped with high-performance noise active cancellation, anti-snoring, noise reduction, concentration, and sleep earbuds Retail Price: 37,800 yen (tax included) These are digital earplugs for noise reduction during sleep. I purchased and used them for several months to combat my roommate's snoring. I am selling them because my environment has changed. *I used only one set of ear tips, so I will leave them attached. Please discard them if you are concerned. Three unused sizes are also included. Instant purchase without comments is welcome.