IWC Aquatimer Chronograph Edition “Darwin”. The size is 44 mm and the thickness is 16.9 mm, which is much larger and heavier than conventional diving watches, and it is still very picky for people to wear. The bulge on the side of the watch is not the helium escape valve, but the cover of the clutch system of the safety diving system. The screw-in crown on the other side of the watch is protected by a bronze shoulder guard. The waterproof performance of the entire watch is 300 meters. The crown and the chronograph buttons on both sides are covered with rubber material, which is specially designed for slip resistance during operation https://www.tocowatch.co/.

SafeDive system, logo design for Aquatimer Chronograph. It can be seen that the watch uses a rotating inner disk, but it is not like the EPSA case that rotates the inner ring through the button on the watch side, but you turn the outer ring, which is transmitted to the clutch gear set, which drives the inner ring to rotate. Two benefits, one is to turn the outer ring, which is better for grip than twisting buttons when wearing gloves, and the other is to reduce the dive time indicator that is crucial to diving to contact with sea water, sand, and hard objects. IWC has also made an extra layer of safety settings. No matter how you twist the inner ring, it can only rotate counterclockwise and will not retreat. Even if you accidentally touch the bezel to advance, the diving time will only be less and less, and the oxygen content will be found immediately. Not enough, go up quickly without accidentally retreating, resulting in a 6-minute dive, and a look at the watch instructs to dive for 2 minutes, to prevent this situation.

On the black dial, the pointer hour markers also use bronze tones to echo the material of the case. There is a 60-minute chronograph at 12 o’clock, a small second at 6 o’clock, and a date display at 3 o’clock. For diving watches, luminous is very important. The hands of the watch and the diving scale are coated with luminous paint. The above picture shows the luminous effect of the watch. The minute hand and the first 15 minutes of the bezel indicate a two-color effect, which is also to allow the wearer to better distinguish the diving time.

A portrait of Darwin is engraved on the back of the watch. In terms of movement, it is equipped with an 89365 self-winding movement produced by IWC. The 89 series movement, which is quite familiar to watch friends, is the first fully developed self-produced chronograph movement series by IWC. The first generation 89360 was born in 2007. The biggest feature of this 89365 is that it abandons the 12-hour timing and supports the flyback timing function. This function can quickly carry out segment timing, and the full chain can provide 68 hours of dynamic storage.