This is the Suunto Eon Steel Bungee Adapter Kit Features: Compatible with Suunto EON Steel dive computer 39 / 1m long bungee cord Adapters, screws and instructions are included Adjustable cord length for a custom fit Easy assembly A complete kit for mounting a bungee to the Suunto EON Steel dive computer. Includes 1 m / 39 inch long bungee cord, adapters, screws and and instructions on how to attach. Once assembled the cord length can be easily adjusted. A pair of Torx T7 screwdrivers is required. "