Endurance Peak II 2019 Aug – 2020 Dec Endurance is the low-end Sports headphones line on JBL brand . Endurance peak II is the hero model in this series.the bench mark is Powerbeats Pro , Peak II came out with ambition and achieved successful on market.I worked with another designer together,from concept stage till mass production.Both of us explored concept design and develop design proposals. after proposal been selected, another design work remotly and I work on site till mass production.