Mangrove Dive Watch.Mangroves are a vital part of our ecosystem as they not only prevent beach erosion but also provide shelter and are home to many native species of fish and animals. The green dial and bezel act as a constant reminder of the importance of our mangroves. Show your support for our local environment knowing that a percentage of the Mangrove Dive Watch sales will go towards cleaning up our beaches.This solid timepiece boasts a 40mm case width made with Marine-Grade 316L stainless steel. Mangrove is comfortably water resistant to a depth of 660ft / 200M, should you decide to take it out to try. The heart of the Mangrove Dive Watch is the well known NH35a automatic movement, which has a 48 hour power reserve. The 316L stainless steel bracelet is 20mm in diameter and it also is made by using 316L marine-grade stainless steel, which is highly corrosion resistant. The heart of the Mangrove Dive Watch is its movement. We picked an extremely well known and capable, well built workhorse movement from Japan known as the NH35A. The crown of the Watch is a screw-down crown. To change the time and date , simply unscrew, and pull the crown once towards you. After am that, simply rotate until you have the required date. To adjust the time you can pull gently on the crown until you have heard/felt a second click.