Give your thumb a break and sharpen your timing accuracy with the Seiko S23547JA grip switch. Specifically designed to plug into your S149 stopwatch system, this remote trigger lets you keep your eyes locked on the finish line while you trigger the timer with a natural, comfortable hand grip. It’s a total game-changer for track meets or high-stakes race days when every fraction of a second counts—allowing you to hit those stops with total confidence without ever having to fumble with the buttons on the main unit