Seiko S141 - 300-Lap Memory Stopwatch for Aquatic Sports

The Seiko S141 is a 300-lap memory stopwatch purpose-built for aquatic sports, with a large three-row display and a 10-bar water-resistance rating that stands up to poolside and on-deck use. Its standout feature is a stroke-rate function that measures strokes per minute for swimming and rowing, giving coaches an instant read on tempo alongside precise split and lap data organized by event.

Key features & specs

• Dual memory mode: single-memory or block-memory function
• Times up to 10 hours in 1/100-second resolution
• Stores and recalls up to 300 split/lap times, segregated by event
• Multiple-event memory with memory recall during operation and overflow warning
• Measures strokes per minute for swimming and rowing
• Large three-row display panel; time and automatic calendar
• Battery-life indicator; 10-bar water resistant

Coach tip: Use the stroke-rate mode to dial in pacing for distance swimmers and crews. Rinse off chlorine or salt residue, dry thoroughly with a soft cloth, and store indoors to protect the seals and display.