harry.swisswatchconnection

Looks to be titanium inserts in lug holes. Have been using QR spring bars for a while, seems ok? I find the stock spring bars VERY difficult to remove and install since Lange straps are very stiff near the spring bars.

Also have a Dato Perp and 1815 Chrono, need to do a family photo shoot

From what I’ve read, since late 2000s, Lange lug holes reinforced with Titanium (or steel?) to prevent wear. I’ve noticed delugs has different versions of their QR spring bars; some have have a larger metal collar that may cause some metal damage...

Totally saved me, very easy too! Haven’t worn anything else for the last week!