Need a new or replacement Sync cord for your underwater camera? This Sea & Sea Sync Cord is compatible with Sea & Sea's Motor MarineII-EX, SX-1000 and is for TTL flash photography. Allows the photographer to create more precise images with Through The Lens (TTL) Monitoring of light for flash requirements. Improve your skills as a photographer and get better photographs with this Sea & Sea Sync Cord. Cord is not compatible with YS-60TTL.