SEIKO stopwatch with split time function, comes with a case for convenient portability. - Brand: SEIKO - Model Name: Sound Producer - Functions: Stopwatch, split time, reset function - Accessories: With case Thank you for viewing. I haven't used it much, but the battery has run out. Battery replacement is required. According to the manual, you can request a battery replacement at a SEIKO retailer. I will protect it with cushioning material, but I will ship it in simple packaging. Thank you for your understanding.