|Grade||Genuine Rolex||3a Swiss||Swiss||Automatic|
|Movement||Rolex Calibre 4130||Genuine Swiss 4130 movement||Swiss 7750 Movement||Asian MingZhu Movement|
|Time Accuracy||-3/+5 sec per day COSC certified||-5/+6 sec per day COSC certified||-10/+10 sec per day COSC certified||-1/+2 min per day COSC certified|
|Stainless Steel Type||904L Stainless Steel||904L Stainless Steel||316L Stainless Steel||316L Stainless Steel|
|Crystal||Sapphire crystal||Sapphire crystal correct date magnification||Sapphire crystal||Mineral Glass|
|Logo & Markings||laser etchings||Exact on entire watch||90% Exact on entire watch||70% Exact on entire watch|
|Dial||Genuine Rolex||Exact detail and font||90% exact detail and font||70% Exact detail and font|
|Luminous Markers||Rolex Lumen||SuperLuminova Swiss Lumen||Swiss Lumen||Normal Lumen|
|Waterproof||100m on standard models||Tested up to 300m||Tested up to 30m||Life waterproof|
|Life expectancy||Lifetime||Lifetime||3-5 years||1-2 years|
|Warranty||2 Years||Up to 5 Years||Up to 3 Years||Up to 1 Years|
|Engine||Rolex Calibre 4130/7750/Mingzhu Engine|
Dial Markers: Index. Indexs were used in this watch to determine time by looking at the index, which is different from normal dial.
Crystal: Sapphire Crystal. The sapphire crystal mirror adopts the only high-quality anti-reflective material, which can provide scratch resistance without affecting its luster. Using this new technology, you can protect the surface of your watch at the most important moments in your life. Tips: The watch is applied with mineral glass instead of sapphire.
Second Markers: Minute Markers around the outer rim. The minute mark around the outer edge of the glass is a design element that represents time. As shown in the picture above, the minute mark around the outer edge.
Watch Case: 316L. A good case can better protect your watch. 316L is a high-grade stainless steel alloy. It is corrosion resistant, easy to weld, durable and safe to use.
Water Resistance: 30 meters. About the watreproof depth of the watch, it is 30 meters that’s enough for no worries. Tips: The watch is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.
Bezel Material: Stainless Steel. The watch bezel is the most expensive component of the watch. It is is a different way to look at watches. The design of the bezel brings a new level of quality and sophistication to the watch. This material allows for a more fused look and enhances the usability of the timepiece.
Luminiscence: Hands. As for the watch’s luminiscence, it is hands. It helps you know the according time when in dark.
Case Back: Solid. The hard solid bottom cover can make the watch more durable, they can withstand harsh outdoor environments, such as rain, snow, cold or hot weather.
Clasp: Fold Over Clasp. This watch case has a designed lock to make it easier and quicker for the user to open and fold the case over to keep it secure.
3a Swiss, 5a Swiss, Automatic, Swiss, Top Swiss