|Grade||Genuine Rolex||3a swiss||swiss||automatic|
|Movement||Rolex Calibre 4130||Genuine Swiss4130 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|
|Dial Color||Black Dial|
|Engine||Rolex Calibre 7750/Mingzhu Engine|
Band Material: Leather.A lasting leather band is used in this watch, which is non-toxic, resistant to high and low temperatures, acid and alkali, flexible, and easy to maintain.
Watch Case: 316L. The situation is that 316L is one of the most heat-resistant stainless steel grades. Its corrosion resistance is very good, even at temperatures as high as 1100*F, without any further heat treatment.
Case Back: Solid. The case has a thick back cover, which is the most important part of the watch. It is strong, durable and scratch resistant.
Crystal: Sapphire Crystal. Watches made of sapphire crystal are the only high-quality anti-reflective material that 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 A watch is applied with mineral glass instead of sapphire.
Hands: Gold-tone. The watch’s hands is gold-tone that is cool and well-designed.
Second Markers: Minute Markers around the outer rim. The design of the other marks in the watch is that the second mark is a small disc placed on the outside of the watch to indicate the time.
Dial Markers: Diamonds. Watches use some simple diamonds as dial markers to show us the time, which is different from ordinary dials.
Luminiscence: Hands. The luminiscence of the watch is hands. These luminiscence makes your watch more refined and high-end.
Bezel Material: Stainless Steel. A stainless steel bezel a unique structure that makes it an excellent choice for watches. The material can resist scratches, abrasions and indentation. This bezel material is the most resistant to heat and cold of all materials used in watchmaking.
Clasp: Deployment. This watch case has a designed clasp which makes it more convenient for you to wear the watch, and the appearance is more beautiful.
Water Resistance: 30 meters. As for the waterproof depth of the watch, it is 30 meters, which is definitely enough for your daily life. Tips: The A watch is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.