Certina DS-1 Chrono AutovsIWC Schaffhausen Iw3716 Portugieser Chronograph

Owners widely praise the Certina DS-1 Chrono Auto for its elegant design, value, and 100m water resistance. Reviewers highlight its handsome, sober tool-like demeanor and good build quality from Swatch Group. One owner notes the watch is a dressier option than a dive watch, appreciating its Super-LumiNova and AR sapphire crystal. The 42mm case is described as not feeling too large due to a relatively thin profile. Some owners report the included leather strap can be uncomfortable and the clasp sharp. One reviewer noted the date window on a similar model appeared disproportionate and the crystal attracted glare due to a lack of AR coating, though other sources mention AR sapphire crystal. Accuracy figures vary, with one owner seeing +4s/day and another noting the Valjoux A05.231 movement. Overall, owners and reviewers rate the Certina DS-1 Chrono Auto highly for its handsome design and strong value proposition.

Owners widely praise the IWC Schaffhausen Iw3716 Portugieser Chronograph for its legible design and eye-catching dial colors, with the blue sub-dial "Panda" configuration being a particular favorite. The in-house Calibre 69355 movement, visible through the display caseback, is a highlight for many, though one owner describes its decoration as a "facade." Some owners find the embossed numerals less appealing than applied ones, and one owner advises against using the chronograph function due to its loudness and short running time after wear, also noting difficulties with DOA units. Overall, owners rate the IWC Schaffhausen Iw3716 Portugieser Chronograph highly for its striking aesthetics and in-house movement, despite some reservations about the chronograph's functionality and decorative elements.