✅ Okay to sleep with earphones on ✅ Doesn't easily get caught when taking clothes on/off With a shape that gently fits the ear, ✅ Designed to be less painful even when sleeping on your side ※ Individual differences may occur depending on the shape of the ear. 【 Product Information 】 ✅ Product: Bluetooth 5.3 Wireless Earphones (Slim) ✅ Condition: Brand new, unused ✅ Color: Black (黒 / Black) ✅ Size: Free size 【 Product Description 】 ✅ Bluetooth Version: 5.3 ✅ Communication Distance: Up to approximately 10m ※ Varies depending on the usage environment ✅ Charging Time: Approximately 1 hour ✅ Continuous Playback Time: Approximately 24 hours (using charging case) ✅ Waterproof Performance: IPX5 ✅ Charging Type: Type-C 【 Pairing Method 】 ✅ ① Turn on Bluetooth on your smartphone ✅ ② Take the earphones out of the charging case → Automatically turns on & enters pairing mode ✅ ③ On the Bluetooth settings screen Select "MD538" or "MD" ✅ Complete when "Connected" is displayed ※ After the initial setup, it will automatically connect just by taking it out of the case. 【 Recommended Points 】 ✅ Curved design that follows the shape of the ear ✅ Natural fit as if integrated with the ear ✅ Less likely to cause ear pain even after long hours of use ✅ Simple and luxurious design ✅ Recommended for gifts 【 Notes 】 ✅ Colors may appear different from the actual product depending on the monitor environment ✅ We inspect the product before shipping, but there may be color unevenness or minor scratches ✅ There may be dents on the outer box ※ Please purchase only if you understand this ✅ Products other than the earphones shown in the photos are not included ✅ If there is an initial defect or damage, please contact us before evaluating the product ✅ Returns are not accepted due to the buyer's circumstances (e.g., different from the image) Other features: Noise canceling