SEIKO SOUNDPRODUCER with digital display Equipped with a stopwatch and various measurement functions. This item was found at my parents' house, and I'm not sure how to use it. The battery seems to be dead, so I haven't been able to confirm its operation. Also, the instruction manual has some tears. There may be some deterioration on the screws. Please consider purchasing this item with the above points in mind. - Brand: SEIKO - Model Name: SOUNDPRODUCER - Function: Stopwatch - Accessories: Case - Operation Buttons: START/STOP, SPLIT, RESET, TIME, TIMER, CALC. - Display: Digital display Thank you for looking.