Manual
Page 17
... contact an AUTHORIZED SEIKO DEALER and request SEIKO SR927W battery. * If the stopwatch is used for more than 2 hours a day and/or the alarm rings for more than 20 seconds a day, the battery life may be less than the specified period. * After the battery is engaged. For battery replacement, we recommend that case, have the battery replaced with a new...
... contact an AUTHORIZED SEIKO DEALER and request SEIKO SR927W battery. * If the stopwatch is used for more than 2 hours a day and/or the alarm rings for more than 20 seconds a day, the battery life may be less than the specified period. * After the battery is engaged. For battery replacement, we recommend that case, have the battery replaced with a new...