DISCLAIMER: I did not buy this watch from Amazon--I received it from Aquacy. I owned an original Aquacy 1769 from their Kickstarter campaign. The 1769 is an awesome watch, but I didn't like its aesthetics. I inquired with Aquacy about the possibility of trading my 1769 for the Cave Diver (comparable value), and they graciously agreed to do the trade. So, I have an Aquacy Cave Diver that was received in trade for an Aquacy 1769. Both watches had the white mother of pearl dial, and, in my mind at least, the watches are quite comparable--I just liked the aesthetics of the Cave Diver better.I received the watch, by happenstance, on a day in which I had planned a training dive (scuba). So, I opened the box, set the watch, popped it on my wrist, and headed out the door to my dive. I did two training dives that day to 50/60 feet. The watch performed flawlessly. In general, I am quite pleased with this watch, and will make it a regularly in my daily wear rotation.My review will comprise the accuracy of the movement, the leather band, and the watch's appearance and aesthetics.First, the accuracy of the movement. This watch has a Seiko NH38A movement. Generally speaking, one would expect this movement to keep time to around 20 seconds a day, per the spec, but my watch is doing much, much better. In fact, after five days, the watch has gained just under 10 seconds, for a rate of + 1.9 seconds/day. This five-day period encompasses wearing the watch on my wrist, setting it in a couple of different orientations on my nightstand, and putting it on a winder. As you can see from the attached screenshot of the offset graph (from the excellent iOS app WatchTracker), the accuracy varies depending on its orientation, as you expect. In the end, this is excellent accuracy for a watch in this price range. I contacted Aquacy about this accuracy, and they said that they did not regulate this watch prior to shipping, and that they are seeing very good accuracy with all of the movements they have received for the Cave Diver.Next, the leather band. When I first put the watch on my wrist, I was a little suspicious of the leather band. It is very thick and stiff. However, after wearing it for just a couple of hours (including on the aforementioned training dives), I became a fan of the band. Generally speaking, I do not like leather bands. I prefer to wear nylon Nato or Zulu bands, especially when diving as they are safer against loss. But I will wear the leather band that came with this watch regularly--it's very comfortable, and very stout. You don't have to worry that it will break. I believe that it will also withstand exposure to water if it receives a little care now and then (e.g., rub in a little NikWax). I have a roughly 7 1/2 inch wrist, and I believe I could wear the leather band with this watch while wearing a 5mm wetsuit (but probably not a 7mm wetsuit)--the length is just about right for me.Finally, the watch's appearance and aesthetics. I did not like the Aquacy 1769 after I got it because I thought the hands were too skinny and the markers too small. This made the watch somewhat difficult to read in many lighting conditions. This is a particularly important issue for a dive watch that one actually wears diving (as I do). Of course, I rely on my dive computer to help me stay safe when diving, but it's nice to take a quick glance at the other wrist and see the time and how long I've been in the water. Reading the 1769 in the water would have been difficult (I never wore it diving). The Aquacy Cave Diver is vastly different. The markers are easier to see, and hands are much bigger and quite visible--they clearly take their inspiration from other famous dive watches that cost 10-20x more than the Cave Diver.The dial is the white mother of pearl. I like MOP because each piece has its own unique personality. Depending on how the light falls on the dial, you can see various shades and shadows and lines that really pop. It's compelling and beautiful, and I am quite enamored with it.Of course, the elephant in the room which I haven't discussed yet is the "cyclops" hole in the dial showing the watch's "heartbeat." I have the feeling that this feature is quite polarizing for watch aficionados. The first day I wore the watch to work, I passed it around the table at lunch and asked my coworkers what they thought about the heartbeat. To a person, they said they liked it. I was surprised by that--I thought some wouldn't like it. The heartbeat makes the watch somewhat unique--there are a few other examples out there (some of which use the same movement), but it's not common. You may not like the the heartbeat--if you don't, you'll probably go elsewhere. But if it appeals to you, then I believe you'll love the implementation in the Aquacy Cave Diver. I'm fascinated by mechanical movements, so, for me, the heartbeat is a nice feature.In summary, I love the Cave Diver, and it will be part of my daily rotation. The white MOP is beautiful to look upon, easily legible, and keeps very accurate time. The leather band is comfortable, though I've switched to my preferred nylon Nato as noted above. I'm a fan, and recommend you seriously consider this watch. The value for the price is hard to beat.