IWC Schaffhausen Iw3910 Portofino Chronograph (79320 Movement)

Owners widely praise the IWC Schaffhausen Iw3910 Portofino Chronograph (79320 Movement) for its classy and versatile style, suitable for both casual and formal wear, with a tactile and satisfying chronograph pusher feel. Owners report excellent timekeeping, with accuracy ranging from +2 to +4 seconds per day, and appreciate the polished hands and indices on legible dials. The 42mm case size is considered by some owners not to be too large for a dress watch, though others note it can be large for the style. One owner finds the inverted Roman numeral 6 marker to be a point of contention. On balance, owners rate the IWC Schaffhausen Iw3910 Portofino Chronograph (79320 Movement) highly for its versatile style and reliable timekeeping.