Seiko Stopwatch 300 Lap Memory

The Seiko S23593J is a professional-grade stopwatch built for aquatic sports and high-performance timing. With 10 BAR water resistance, a 300 split/lap memory, and stroke rate tracking for swimming and rowing, it's the trusted timing tool for coaches, officials, and serious athletes across swimming, triathlon, rowing, water polo, and athletics.

A large three-row display shows split, lap, and total time simultaneously — so you never miss a beat on the pool deck.

• 10 BAR water resistance — rated to 100m (300ft)
• Measurable up to 10 hours in 1/100 of a second
• 300 split/lap memory — segregated into up to 100 data blocks
• Stroke rate measurement for swimming and rowing (up to 9 data points)
• ID No. function for storing individual user data
• Memory recall during operation
• Large three-row display — split, lap, and total time at a glance
• Fastest lap time recall function
• Time and automatic calendar
• Battery life and memory capacity indicators

⚠️ WARNING: This product contains a button/coin battery. Keep away from children. Batteries can cause severe or fatal injuries within 2 hours if swallowed or placed inside any part of the body. Seek immediate medical attention if ingested.