I bought these a while ago because I couldn't decide on a color, but I'm selling this one because I haven't used it. Although it's unused, the plastic packaging is deformed. Please check the photos. Also, please refrain from purchasing if you are concerned as this item has been stored for a long time. It will be shipped via Yu-packet Post Mini. [DRETEC] "Learning Timer" Study Timer Stopwatch Study Timer Study Goods Time Up 2 Mute T-587 Compact digital stopwatch with easy-to-use button layout. - Easy-to-use learning timer for use on a desk - Large "START/STOP" button that is easy to press - Notifies you of the countdown setting time with sound and light - Day countdown function useful for tests and exams (day count function) - Selectable alarm duration (15 seconds, 1 second, silent) - Key lock function to prevent accidental operation - Calendar function/clock function (clock function: AM/PM/24-hour display switching possible) - Convenient repeat function (can be repeated by pressing the set button while the countdown is stopped) [Product Specifications] Display method: LCD digital 7 digits Maximum day count setting days: 9999 days Calendar setting range: 2018-2050 Operating temperature range: 0-40℃ Maximum set time: Timer (minutes) 199 minutes 59 seconds / Timer (hours) 199 hours 59 minutes 59 seconds Count-up maximum display time: Timer (minutes) 199 minutes 59 seconds 99 seconds / Timer (hours) 199 hours 59 minutes 59 seconds Alarm duration switching: Approximately 15 seconds / Approximately 1 second / Silent (switchable) Battery life: Approximately 1 year (when the alarm sounds for 15 seconds x 2 times a day) Clock function: 〇 Clock accuracy: ±60 seconds per month Body size: Approximately width 60 x depth 80 x height 23mm Body weight: Approximately 61g Power supply: 2 AAA batteries