It can be used through the watch strap, so it does not get in the way. This compass is water resistant to 100 meters and complies with harsh conditions. YCM compass is a professional compass manufacturer with over 80 years of history. It has received high reputation both domestically and abroad, and is evident that the quality and reliability is recognized as a Japanese Self-Defense Force certified product. YCM is a Japanese brand that is proud to protect and maintain ideals.