We have confirmed that it is in working order. I have used it a few times, but I am selling it because I no longer need it m(__)m The box is not included. There are no noticeable scratches, but please refrain from purchasing if you are concerned about minor imperfections. We have recorded multiple images and videos to prevent swapping and accidents during shipping. The popular school timer with a large screen now features a "battery replacement notification mark" to prevent malfunctions due to low power and sudden battery failure! When the battery level is low, the "battery replacement notification mark" will appear and flash. A convenient large timer that can be attached to the blackboard with a flat magnet! PLUS the "battery replacement notification mark" to prevent malfunctions due to low power and sudden battery failure! ・Simple features: timer (with repeat function), clock, and stopwatch ・"Sound OFF" function for alarm and operation sounds ・Flashing function to indicate the end of the countdown even when "Sound OFF" is enabled ・When the battery level is low, the "battery replacement notification mark" will appear and flash ■ Function PLUS 1: "Battery Replacement Notification Mark" that lets you know when to replace the battery at a glance When the mark appears and flashes, it's time to replace the battery. You can see the replacement time at a glance, so you don't have to worry about it suddenly stopping working. ■ Function PLUS 2: "Sound OFF function" that can turn off operation and alarm sounds This is a convenient function when you want to operate it in an environment where you don't want to make any noise, such as during a test. You can turn off the operation sound and only want the alarm sound to sound, you can release the sound OFF function after setting the timer. ■ Function PLUS 3: "Display flashing function" that allows you to check the alarm visually When the timer is set, the display will flash at the same time as the alarm sound when the countdown reaches "00:00". You can visually confirm that the alarm is activated even in an environment where it is difficult to hear the sound. *This function works regardless of whether the sound is ON/OFF. ■ Function PLUS 4: "Design" that allows you to hold it firmly when attaching and detaching The design allows you to put your fingers around the product. You can hold the product firmly, making it easy to attach and detach, especially to and from the blackboard. Dimensions: W190 x D21 x H114mm Weight: 270g (excluding batteries) Volume (sound pressure): 72dB or more Power supply: 2 x AAA batteries (alkaline batteries recommended) (rechargeable batteries [Ni-MH] can also be used) Remarks: Rear magnet, movable stand, with hook hole *Batteries are sold separately.