Timer Function: Countdown up to 23 hours, 59 minutes, 59 seconds Stopwatch Function: Measurement unit 1/100 second Stopwatch Function: Measurement time up to 23 hours, 59 minutes, 59 seconds Calendar Function: Month, day, day of the week Clock Function: 12/24 hour mode switching, hours, minutes, seconds, alarm time Model: HS44 5 ATM water resistance - Included: Instruction manual - Price: ¥2,500 No inner box Unused, but the battery has been replaced with a new one due to age. Thank you for viewing.