Product Features 1. Alarm function: Up to five alarm sets can be programmed, each with a 60-second ringtone. This feature is ideal for general alarm use and especially beneficial for users who need multiple wake-up reminders. 2. Countdown timer: Supports a maximum countdown of 23 hours and 59 minutes (some units support up to 99 minutes and 57 seconds). After the countdown ends, the device emits a 60-second alert tone. Memory function automatically restores the previously set countdown time. Press any key to stop the alarm sound, then press the "M/S" button to restart the countdown. Designed for ease of use in time-sensitive environments such as telecommunications, banking, and food service industries. 3. Allows customizable time intervals and countdown settings across five alarm groups. 4. Each alarm set includes a 60-second audible alert. 5. Clock format: 12-hour or 24-hour display can be selected. Button Functions 1. Set (Mode): Press and hold to enter setup mode. 2. H/M: Adjust hour value (used for countdown selection). 3. M/S: Adjust minute or second value and used to start or stop alarms and countdowns. Usage Instructions Detailed user instructions are included with the product. Please refer to the physical item for accurate model-specific information. Product Details 1. Requires one AAA battery (battery not included). 2. LCD window size: 50mm x 28mm. Outer dimensions: 80mm x 56mm x 22mm. 3. Weight: 62 grams per unit. 4. Alert sound: DDD tone, volume suitable for most users. Individuals who are heavy sleepers may not be awakened easily—purchase with caution. No returns or exchanges accepted due to sound volume preferences. 5. Built-in magnet and stand with hanging hole on the back. Can be mounted on metal surfaces, placed on a desk, or hung as needed.