|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|
|Band Width||Around 16mm|
|Band Length||Around 18cm|
Case Back: Solid. We use a strong bottom cover, which is neither soft nor flexible. Made of steel, it has excellent durability and scratch resistance.
Crystal: Sapphire Crystal. Sapphire glass can block moisture and dust, protect the hands, dial and movement. Tips: The A watch is applied with mineral glass instead of sapphire.
Hand: Silver-tone. For the watch, the hands is silver-tone, which looks pretty stunning and high-end.
Second Markers: Minute Markers around the outer rim. The design of the second marker is a small round dial, placed on the outside of the watch to indicate the time.
Dial Markers: Dot. The dot in a watch instead of Roman numerals to show us the time.
Luminiscence: Hands. The luminiscence of the watch is hands. With this watch, you will lose your time in dark.
Bezel Material: Stainless Steel. The watch bezel is the most expensive component of the watch. It is is a high-end material made from stainless steel bezel. It is the most expensive material of the watch. In addition, stainless steel bezel 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 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. But please make sure you close the crown properly. Tips: The A watch is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.