|Grade||Genuine Patek Philippe||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||90% Exact on entire watch||70% Exact on entire watch|
|Dial||Genuine Patek Philippe||Exact detail and font||90% exact detail and font||70% Exact detail and font|
|Luminous Markers||Patek Philippe 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 Color||Black Dial|
Band Material: 316L. The raw material of this watch is the hardest 316L, which is a durable metal with light weight and high strength. It is corrosion resistant, non-magnetic and highly polished.
Watch Case: 316L. The best 316L used in this case 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. Watches made of sapphire crystal have good thermal properties, excellent electrical and dielectric properties, and are resistant to chemical corrosion. 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, we apply with hands of silver-tone, which looks pretty stunning and high-end.
Second Markers: Minute Markers around the outer rim. The design of the second mark can be used in many different applications, such as watches, clock radios, etc.to create timeless works.
Dial Markers: Index. With a index unlike the ordinary dial, the watch uses some simple indexs as dial markings to show us what time it is.
Luminiscence: Hands and Markers. The style of the watch’s luminiscence is hands and markers. As you can see in the pictures above.
Bezel Material: Stainless Steel. The stainless steel bezel material is one of the best materials for watches. It is more simple and endurable. It makes you improve your taste from the inside out.
Clasp: Fold Over Clasp. This watch case has a designed lock to make it easier and quicker for the user to open and fold the case over to keep it secure.
Water Resistance: 30 meters. About the watch, the waterproof depth is 30 meters, which is a good feature for the watch. Tips: The A watch is just daily waterproof, need to purchase additional waterproof service which is up to 30 meters.
Function: Date, Hour, Minute, Second. The watch function can be used to measure hours and seconds accordingly.