|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 7750/Mingzhu Engine|
Bezel Material: Stainless Steel. Bezel material 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.
Hand: Silver-tone. The watch’s hands is silver-tone, that makes your watch luxury and funny.
Dial Markers: Luminous Index. The luminous sticks in the watch jar is a small LED light source, which can be used as a watch time indicator.
Luminiscence: Hands and Markers. About the watch, the luminiscence is hands and markers. These luminiscence makes your watch more refined and high-end.
Watch Case: 316L. The material in this example comes from 316L stainless steel, which is a medium-to-high-grade shell material. Because it contains molybdenum, it is more corrosion-resistant than 304, and the grade is also higher.
Second Markers: Minute Markers around the outer rim. The small mark on the outer edge of the glass is one of the most recognized design elements in all industries, also known as clock hands. This design element has been used in many well-known designs.
Case Back: Solid. The solid bottom cover will have better water resistance than the through bottom. A waterproof sealing ring is added to the through-bottom watch, which makes it difficult to seal.
Water Resistance: 30 meters. About the watreproof depth of the watch, it is 30 meters. But make sure to close the crown properly. Tips: The watch is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.
Band Material: 316L. The band is made of 316L steel, the hardest material, which is a very strong and corrosion-resistant steel. It has the same strength as the most popular grades (HRC52, HRC55), but only half the weight. Compared with competitors, the production cost of stainless steel is also higher.
Clasp: Fold Over Clasp. The combination of a watch case and a bracelet watch is a great way to protect and store your watch. It has a unique design that creates a secure lock, which can be easily opened and closed.
3a Swiss, 5a Swiss, Automatic, Swiss, Top Swiss