Nivada Grenchen Super Antarctic 35mm AutomaticvsUndone Aquadeep K9

The Nivada Grenchen Super Antarctic 35mm Automatic is praised as a fantastic time-only release with excellent legibility due to its large indices and hands, and a comfortable 38mm case. Reviewers highlight its vintage-accurate 10.1mm thinness and 200m water resistance. An owner reports accuracy gains of +6 to +9 seconds per day, and one reviewer notes the "cream" lume color appears too yellow for faux patina. Overall, owners and reviewers rate the Nivada Grenchen Super Antarctic 35mm Automatic highly for its comfortable size and excellent legibility at its price point.

Owners report the Undone Aquadeep K9 offers good quality and a well-made OE strap, with the Seiko NH72 movement noted for reliability and accuracy. One owner experienced a very poor customer service interaction regarding delivery and a warranty claim denial for moisture damage, advising others against purchasing. Another owner found a review suggesting $150 was a good price for the watch, noting the brand's interesting designs originating from Hong Kong. On balance, owners value the watch's build quality and reliable movement, though customer service experiences can vary significantly.