Airain Watches Type 20vsSeiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

Owners widely praise the Airain Watches Type 20 for its beautiful and faithful recreation of a classic model, highlighting its easily wearable 39mm case sizing and the pleasure of its manual winding movement. Reviewers note the pleasing "old radium" lume and the vintage military watch experience offered by modern construction. Some owners find the design timeless and clean, with one owner calling it "just perfect." However, reviewers point out that the vintage-style sapphire crystal can add glare, and the case is still considered a bit thick despite the manual movement. Strap hardware required swapping between included straps for one reviewer. One owner noted a small scratch on the crystal near the 12-hour mark. The movement's appearance is considered less attractive than many hand-wound chronographs by one reviewer. On balance, owners and reviewers rate the Airain Watches Type 20 highly for its faithful vintage design and enjoyable manual winding action.

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition is praised for its beautiful design and refinement over previous models, featuring vertically textured glacier-inspired dials. Owners, however, consider the €1500 RRP too high, suggesting a price closer to €900-€1000, noting the aluminum bezel insert instead of ceramic. Some owners report the 6R movement runs slow. On balance, owners find the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition beautiful and a refinement, but the price and aluminum bezel are points of contention.