11 preset countdown options: This cubic timer offers 11 preset times, including 1, 3, 5, 10, 15, 20, 25, 45, 60, and 90 minutes. To start, open the timer on the desired number side; the countdown begins automatically. To reset, turn on the timer to the preferred time. Easy to use and portable: Long press the switch button to start. The chosen time faceup countdowns automatically. The LED stays lit throughout the countdown and flashes for 10 seconds before the end. The compact cube design makes it simple to carry in a pocket, backpack, or handbag for use anywhere. Alarm modes: Three timing and alarm options are available: ring, vibration, or mute. After enabling the timer, press the button briefly to switch modes. Choose the alarm method that suits your environment to avoid disturbing others. Battery status and usage duration: An LED indicator shows power status with red for low power and blue for full power. When fully charged, the timer can be used for about 50–300 countdowns. 23 practical use scenarios Focus work at an office desk: Use 25minute or other preset blocks for focused work sessions, followed by a short break to maintain productivity. Study or meeting sessions: Time tasks, presentations, or discussions in classrooms or conference rooms with a clear countdown and a nonintrusive alarm option. Home and everyday tasks: Use in the kitchen, workout routines, or any task that benefits from a simple countdown and a portable, deskfriendly timer.