Case - Fully Tegimented steel

Case Diameter - 43mm

Bezel - Fully Tegimented steel

Calibre - SuperQuartz in Oil bath

Lume - Factory Super Luminova

Crystal - Sapphire with undamaged AR coating

Bracelet - NEW Tegimented - Unsized and unworn

Strap - NEW silicone with NEW style Tegimented clasp - Uncut and unworn

Warranty - NONE.

Included - Original box with booklets and card, Original receipt. Bracelet kit and box. Strap instructions card.


I have had four Sinn' now and absolutely love them. The UX Hydro is probably the best dive watch in existence (according to me who has never done any actual diving) The simple reason for this is the watch case is oil filled and this means when using it underwater the dial is visible from any angle, it appears as if the dial is attached to the underside of the crystal. The oil fill also means it is effectively water resistant to ANY depth as there is no air in the case. However it is officially rated at 5000m.


In addition, the case which is made from German submarine stainless steel has been "Tegimented" which is a proprietary hardening process to practically eliminate the risk of dents and scratches. These watches will take an absolute beating yet still stay looking like new. There's a number of good reasons they are used by the German Special forces - the GSG9


The technologies in this watch are pretty special and it is still only 44mm in diameter and no thicker than a Seamaster. Inside in the oil bath is a thermo-compensated Superquartz movement which delivers chronometer grade timekeeping along with a 7 year minimum battery life. This example was purchased in 2019 so there's at least another 4 years of battery life left.


In cold weather off the wrist you will notice a small bubble forming in the oil inside the case, this is normal and not a fault. When worn on the wrist the oil will expand slightly with temperature and the bubble will disappear.


Originally purchased here in Australia I bought the watch from its original owner. I then wore the SINN on an Erica's Original strap as the included silicone strap had been cut too small for me. Included in the sale is a NEW and unworn Tegimented bracelet and a NEW and uncut silicone strap and latest generation adjustable clasp in Tegimented steel.


The only blemish on the whole watch is a tiny nick near the crown on the case back. It was probably run over by a Tank ;)