Islander Automatic Diver #ISL-18vsSan Martin Watchdives X 39mm NH34 GMT Dive SN0121B

Islander Automatic Dive Watch #ISL-18 owners praise its 43mm size, double-domed sapphire crystal with anti-reflective coating, and embossed ceramic bezel. The watch is noted for its quality and weight at its $300 price point, featuring a Seiko NH36 automatic movement with hand-winding and hacking capabilities. On balance, owners rate the Islander Automatic Dive Watch #ISL-18 highly for its robust features and build quality at an accessible price.

San Martin Watchdives X 39mm NH34 GMT Dive SN0121B owners widely praise its fit and finish, which is considered up to normal San Martin standards, with one owner noting quality detailing and a color-matched date wheel as a nice touch. The bezel action is flagged as great, and the new fly-adjustable clasp with the hexagon logo is well-received. However, some owners find the handset and indices proportions awkward and too bold, with a preference for a white date wheel over the color-matched one. The GMT hand alignment runs 10–15 minutes ahead of the local time hour hand, which some attribute to typical play in the NH34 movement, while one owner found this misalignment excessive. On balance, owners rate the San Martin Watchdives X 39mm NH34 GMT Dive SN0121B highly for its build quality and wearability at the price point, despite some aesthetic and functional critiques regarding the dial elements and GMT hand.