|Grade||Genuine Richard Mille||3a swiss||swiss||automatic|
|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||Sapphire crystal||Mineral Glass|
|Logo & Markings||laser etchings||Exact on entire watch||95% Exact on entire watch||90% Exact on entire watch|
|Dial||Genuine Richard Mille||Exact detail and font||95% exact detail and font||90% Exact detail and font|
|Waterproof||50m 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||Transparent Dial|
Case Back: Transparent. The hard transparent back cover is usually used to protect the watch movement from direct damage. These watch cases can also increase the durability and strength of the watch movement.
Crystal: Sapphire Crystal. Sapphire crystal is a good choice because it has good thermal properties, excellent electrical and dielectric properties, and chemical resistance. It has the characteristics of high temperature resistance, good thermal conductivity, high hardness, infrared penetration, and good chemical stability. Tips: The A watch is applied with mineral glass instead of sapphire.
Hand: Silver-tone. For the watch, the hands is silver-tone, which can highly improve the outlook of the watch.
Second Markers: Minute Markers around the outer rim. The design of the second minute mark around the outer edge is shown in the picture above.
Dial Markers: Dot. According to a study, the human eye is sensitive to point, uses some simple dot marks to display the time, making the dial more simple and stylish.
Luminiscence: Hands and Markers. The watch’s luminiscence is hands and markers. With this watch, you will lose your time in dark.
Bezel Material: Ceramics Bezel. Bezel material is a high-end material made from Ceramic. It is the most expensive material of the watch. In addition, Ceramic is a substance with high flexibility and energy absorption properties which can be used as the core medium of the watch.
Clasp: Deployment. The clasp design of the watch which is more durable and stylish.
Water Resistance: 30 meters. The waterproof depth of the watch 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.