|Grade||Genuine Rolex||AAAAA Clone||AAA Replica||A Replica|
|Movement||Rolex Calibre 4130||Genuine Swiss Clone 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|
Dial Markers: Index. The luxury index of the watch dial markers instead of Roman numerals to show us the time.
Water Resistance: 30 meters. A good waterproof of the watch has been applied, it is 30 meters, which has a good waterproof function. Tips: The A Replica is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.
Case Back: Solid. In the world of watches, a strong back cover is very important, not soft or flexible. It is made of steel, very durable and scratch-resistant.
Watch Case: 316L. The material in this case comes from 316L, which 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.
Crystal: Sapphire Crystal. Sapphire crystal is a very common glass that can protect your watch from scratches. Tips: The A Replica is applied with mineral glass instead of sapphire.
Band Material: 316L. The raw material of this band is 316L, which is a durable metal that is both light and strong. It is corrosion resistant, non-magnetic and highly polished.
Clasp: Fold Over Clasp. A fold over clasp are used here to make it easier and faster for the user to open and fold the watch case to keep it secure.
Second Markers: Minute Markers around the outer rim. The minute mark on the outer edge of the glass is a design element that represents time, also known as a clock hand, which has been used in many well-known designs, such as watches and other objects.
Luminiscence: Hands and Markers. The design of the watch’s luminiscence is hands and markers. The luminous things makes you find the time in dark.
My boyfriend likes it very much. Customer service is very patient answer my questions.