I got the email this morning from Watchbuys. Four new 556 limited dial colors with strap/bracelet options and a couple EZM divers. The 556 in ice blue with textile is my fave.

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The post Sinn Fall 2025 releases appeared first on RK Watch Service.

I just received this email from Watchbuys yesterday. I'm a sucker for white dials and I really like the looks of this one. Sure would hurt the bank account.

Sinn-EZM-3-SW-Divers-Limited-Edition-181p8184.htm

The post This Beauty is Available To Reserve from Watchbuys 10/8/25 appeared first on RK Watch Service.

Just wanted to share a fun DIY project I just completed. I recently purchased a roughly 20 year old Sinn 256 from Japan. The watch was well cared for but the matte beadblasted finish was getting a bit shiny on the lugs and sides of the case. The bracel...

The post DIY Beadblasting on my “new” Sinn 256 appeared first on RK Watch Service.

Hodinkee reports that Sinn, amongst 9 other brands, will join the fair in 26. My initial thought is they must have something significant to share in the works, as it’s a considerable expense to participate. New model? Refreshed cases on mainstays ( t...

The post Sinn to Present at 2026 Watches and Wonders appeared first on RK Watch Service.

Sinn have this year released a new model, the Sinn U50 Hydro.

Now, this to me looks like it is designed to replace the Sinn UX Hydro. Similar pricing. Similar functionality.

The UX uses a thermocompensated quartz movement which is chronometer certifi...

The post Sinn U50 Hydro quartz appeared first on RK Watch Service.

Hello all. I recently bought a Sinn watch at auction and it’s missing one of the end links. I bought some replacement links but they are to big and do not fit the case. They do fit the bracelet. I’m having trouble finding the right links. Can someone...

The post Sinn end links appeared first on RK Watch Service.

I just found a copycat that IMO has a nicer clasp implementation than the Sinn.

Maybe the Sinn clasp has greater margin of adjustment, but I like better this clasp. Her is the actual link of the bracelet that moves instead of a clasp extension.

...

The post Is it a better clasp? appeared first on RK Watch Service.

Dear fellow Sinn-ers,

I am as of recently a very happy owner of a Sinn 105, which I absolutely love - having said that already after 5 days of regular wear I noticed first scratches on the outer AR coating:

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The post outer AR coating’s durability appeared first on RK Watch Service.

Hello,

About a year ago I purchased an 856 and a 556 I RS.

Within a few months, the 556 exhibited severe resistance on winding and wouldn't hold a full "charge." I had it serviced under warranty and it still didn't feel silky smo...

The post Sinn 556 and Sellita SW200 problems appeared first on RK Watch Service.

I bought a used U1 from somewhere... I cant remember. I either traded for it or bought it outright on this forum.

Its been two years. Last year I wanted to take it on an overseas vacation with me and it stopped working two days before so I took a di...

The post Is your Sinn Reliable? appeared first on RK Watch Service.