I‑5039
SPORTS TIMER
ST−306
INSTRUCTION MANUAL
Many thanks for purchasing SEIKO SPORTS TIMER ST-306.
Before putting your SEIKO SPORTS TIMER, MODEL ST-306, to use, please be sure to carefully
read through this manual as it has been designed to provide you with information for correct
handling, use and maintenance necessary for safe, long-lasting and trouble-free operation.
Keep this manual at hand for ready reference.