Thank you for viewing. I used it for about a year after purchasing it. ・Recommended batteries: 2 AAA alkaline batteries (sold separately) ・Main unit size: (approx.) Height 6.5 x Width 9.5 x Depth 2.5 cm ・Main unit weight: (approx.) 75g ・Comes with convenient functions such as repeat function and time display. ・Functions: Countdown (up to 99 minutes 50 seconds) Count up (up to 99 minutes 59 seconds) Repeat function Pause function Alarm volume switching (Large, Small, Mute (light flashes)) Time display 12/24 hour display switching Magnet on the back of the main unit Strap hole Can be placed or hung (built-in stand)