• New technology that realizes the only one design: Uses a water bottle that is not used in other colors for the exterior parts. The unique design of the world has been created with a unique marble pattern • Ultra compact and lightweight body design 40% smaller than WFM4 and has been realized to provide a comfortable fit and improved stability that won't fatigue even when worn at all times • High noise cancelling performance with the same integrated processor V1 as the WF-1000M4. Compact and lightweight yet high noise cancelling performance • High external sound intake performance: Greatly increases the amount of intake than previous models. Allows you to listen while without removing the earphone. High noise cancelling performance. Equipped with a V1 integrated processor as the WF-1000M4. Compact and lightweight with high noise canceling performance • It can be used for up to 20 hours when you are on for a long time, and it can also be used for quick charging even when you are out suddenly. In addition, it has a high connectivity that won't sound out of any smartphone (Xperia, iPhone, etc.), and splash-proof performance that you can enjoy without worrying about rain or sweat