|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 transparent back cover can transmit a high taste and good looking than solid back.
Crystal: Sapphire Crystal. Sapphire glass has a special anti-reflective coating that minimizes light reflection and provides scratch resistance without affecting its brightness. Sapphire crystal is a highly transparent crystal that can be used to make optical lenses, diffractive optical elements, and filters. Tips: The A watch is applied with mineral glass instead of sapphire.
Hand: Silver-tone. Regarding this watch, hand design is silver-tone that is simple but luxury.
Second Markers: Minute Markers around the outer rim. The second mark on the minute mark around the outer edge of the dial, as shown in the picture above.
Dial Markers: Roman Numeral. We can use an Roman numeraled watch and use some simple number marks to display the time, making the dial more concise and stylish.
Luminiscence: Hands and Markers. As you can see in the pictures above, the luminescence of the watch is hands and markers. As you can see in the pictures above.
Clasp: Deployment. We use a deployment clasp for the watch allows the user to fold it into several positions or angles for unique use.
Water Resistance: 30 meters. We make the watch waterproof at 30 meters, which is like a real watch. Tips: The A watch is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.