I bought this clock as nobler Zweituhr for F91-W, which I use as Allrounduhr for outdoor activities. The clock itself is very well made, the bracelet, as stated, made of stainless steel. Unfortunately, the housing itself is only of plastic, but you'd never seen. For durability and scratch susceptibility I can not say anything because I got the clock only. The stainless steel bracelet can be easy and without any problems, and especially no extra tools (a screwdriver is sufficient) in length adjustable. The clock is easy and very comfortable to wear. Then there is the cult factor. Super-clock.
