The Seiko S-261 is a professional quality watch back opener, much more safe and efficient than a standard case knife, the S-261 holds the watch securely in place with adjustable pins and forces a knife into the case back for easy opening of any watch. Includes extra replacement blades and instructions. Made in Japan. Complete tool with spare blade.

Seiko Case Opener for Snap-on Case Backs, Includes Replacement Blades