Diver extension

A diver's extension is so that a Bracelet can be made longer without tools, so that a dive watch can be worn over a wetsuit. There are two major types, fixed length or adjustable. Here's fixed length extension from my Halios [Holotype]:

This is decent, but doesn't help with different wetsuit thicknesses. Better is an adjustable design, such as the Rolex Glidelock, Seiko [Marinemaster] or this [Citizen] [Promaster]:

The silver slider on the clasp releases the extension while still on the wrist. Clever and comfortable, and nice on hot days when wrists enlarge.

Here's the fixed-length one on the Seiko [Monster]:

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