|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||Diamonds Skull Dial|
Case Back: Transparent. The hard transparent back cover can make the watch more durable, they can withstand harsh outdoor environments, such as rain, snow, cold or hot weather.
Crystal: Sapphire Crystal. We use sapphire crystal for the watch, which is a high-quality glass that can clearly see the dial. Tips: The A watch is applied with mineral glass instead of sapphire.
Hand: Silver-tone. The hands of the watch is silver-tone, which is delicated and cool.
Second Markers: Minute Markers around the outer rim. The second mark of the dial design is a small disc, placed on the outside of the watch to indicate the time.
Dial Markers: Dot. dot dial markers are used as markers instead of Roman numerals, and will affect the appearance of the dial.
Luminiscence: Hands and Markers. The design of the watch’s luminiscence is hands and markers. With this watch, you will not lose your time in dark.
Bezel Material: Stainless Steel. The watch uses a stainless steel bezel, which 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.
Clasp: Deployment. The clasp of the watch which allows the user to fold it over in multiple positions or angles for unique use.
Water Resistance: 30 meters. The watch’s waterproof depth is 30 meters. But make sure to close the crown properly. Tips: The A watch is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.