Thank you for viewing! ✅ Brand new, unused ✅ Immediate purchase, purchase without comment OK ✅ Same-day shipping About the product: 【Easy operation】 It's very easy to use! 3 steps! ① Turn on the switch. ② Adjust the volume with the dial. ③ Just put it on your ear. 1. Select a silicone ear tip that fits your ear canal. 2. Put on the sound amplifier and turn it on. 3. Adjust the volume. 【Make words clearer】 Distinguishes human voices from surrounding sounds, improves the clarity of speech, and amplifies sound up to approximately 30 times. Note: Be sure to choose an ear tip that fits your ear canal and wear it correctly. Please make it as close to your ear canal as possible. If not worn correctly, howling or echo may occur. 【Lightweight type of only 5g】 Weighs only about 5g, ultra-lightweight. Ergonomically designed for a comfortable fit that won't tire you even after long hours of use. Small and light, it doesn't stand out, so it's recommended for those who are particular about appearance and fashion. 【USB rechargeable】 TYPE-C charging, the charging case has a built-in large-capacity battery, which can provide more than 100 hours of additional use time. Can be used continuously for up to about 40 hours on a full 3-hour charge.