• Ultra compact and lightweight body design 40% smaller than WFM4 body size for a comfortable fit and improved stability without fatigue • High noise cancelling performance with the same integrated processor V1 as the WF-1000M4. Small and lightweight yet high noise cancelling performance • High external sound intake performance: Greatly increases the amount of intake than previous models, allowing you to listen while without removing the earphone • High quality call performance: High precision voice pick up technology for high call quality and superior call quality than previous models • Easy to use and individual optimization, automatic control function, high battery performance, IPX4, three-dimensional acoustic compatible, various usability