【Bluetooth 5.4 Communication, Stable Even on Trains】: Simply take the wireless earbuds out of the case to automatically turn them on, and select "K3" on your smartphone to complete the initial connection. Automatic pairing is done with no need for a single touch from the next time onwards. Even in crowded environments like commuter trains or cafes with many devices around, the stable communication up to 10 meters minimizes music interruptions, and your voice in online meetings and calls is clearly delivered to the other party. This is a reliable connection that is essential for daily commutes. 【Intuitive Control with Touch Operation】: Adjust the volume with a light touch of your fingertips, and double-tap to play music or answer calls. There is an operation confirmation sound, so you can operate it with peace of mind even while running or working from home with your hands full. Press and hold the right earbud to switch to low-latency game mode, reducing the lag between video and audio. Switch to high-quality listening mode when you want to enjoy music thoroughly. You can use it according to the scene. 【30-Hour Long Battery Life, Enough for a Day Out】: The earbuds alone can play continuously for about 4-5 hours, and when used with the charging case, a total of up to 30 hours is possible. Automatic charging occurs simply by storing them in the case, and the case itself is fully charged in about 1.5 hours. You can use it with peace of mind without worrying about the battery level even on weekend hikes, long shopping trips, travel, or business trips. It's a reliable long-lasting battery for sudden outings or long online meetings. 【Perfect Fit for Your Ears, Comfortable & Durable Design】: The earbuds fit snugly in your ears with a shape that reduces pressure, and the comfortable design makes your ears less likely to hurt even after wearing them for more than an hour. It is also resistant to sweat and daily use, and operates stably even in the summer heat or winter heating environments. Furthermore, the high-durability design prevents disassembly and modification, allowing you to use it with peace of mind for a long time. It is also ideal for light exercises such as running and walking, and will be your companion for everyday use. 【Palm-Sized, Comfortable to Carry Anywhere】: It fits neatly in cosmetic boxes and small bags, and is comfortable to carry anywhere, such as commuting, going to school, or traveling. Earphones bluetooth wireless earphones 【New Release】HI-FI sound quality Noise reduction equipped IPX7 waterproof Bluetooth 5.4 Touch operation Automatic pairing Up to 30 hours of playback Compatible with iPhone/Android Small and lightweight For web conferences/commuting/school/gaming/sports