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At OSEI LLC, we have years of experience in engineering design and adventurous living. We  focus on quality and innovation and we are the only company with products for divers, pilots and explorers. 

OSEI branded products include Crystal Pilot, Crystal Sky, Crystal Mic, Crystal Earth, Crystal Ocean, Desert Overlander and Steve Kwan Designs.


Steve's friends call him "Renaissance Man" because he is truly a master of all trades having degrees in 4 Engineering disciplines and a degree in Theology. A pilot and flight instructor for both helicopter and airplane, he also served as a helicopter mechanic for the US Army in Iraq. In his free time he loves to cook healthy food, play with his kids and keep in tip top shape (did we mention he's also a certified fitness instructor).

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