Brand new, unopened. With an astonishing weight of only 3.9 grams per ear, you won't feel like you're wearing them even after long periods of use. The short nozzle design, which fits the shape of the ear, is designed to fit the ears of Japanese people, so you don't have to worry about them falling out even during intense exercise. The standard package includes three sizes of ultra-flexible silicone ear tips (S/M/L). They gently envelop the ear canal with a "melting-in-your-ear" softness, providing a comfortable fit without any pressure. Even those with sensitive skin can wear them comfortably and won't feel tired all day long. The charging case has an oval, compact body that fits snugly in the palm of your hand. It fits easily into pockets and small item cases, making it ideal for commuting, traveling, and the gym. 【See the remaining battery life, long-lasting and worry-free】Compatible with Type-C fast charging, it can play for about 1 hour with just 10 minutes of charging. Even before sudden outings or calls, you can quickly charge them and use them immediately. They can play for 6-8 hours on a single charge, and up to 36 hours with the charging case. You don't need to charge them until the weekend, even if you use them all day long. The front of the case features an intuitive LED digital display. It displays the remaining battery life in real-time numbers, completely freeing you from the stress of "forgetting to charge." You can see the battery status at a glance even when it's in your bag, giving you peace of mind before you go out. 【Bluetooth 5.3 + Clear Calls】Adopting Bluetooth 5.3, it achieves up to twice the connection speed compared to conventional models and almost zero latency. The moment you take out your smartphone, the earphones automatically reconnect—pairing hassles are a thing of the past. You can fully immerse yourself in movies and games with smooth synchronization performance that doesn't make you feel any "sound lag" even in videos and mobile games. The built-in high-sensitivity dual microphone + ENC call noise canceling captures your voice clearly even in crowded trains or outdoors with strong winds, and delivers it to the other party. It achieves sound quality "as if you were talking face-to-face" during remote conferences, online classes, and calls. They can be used completely with just one earbud. You can use them freely depending on the situation. Both "connection speed" and "transmitted sound" make your daily life more comfortable.