Countdown Timer Alarm Clock with Vibration and Customizable Alerts - High quality: This reminder clock with vibration alarm features a stylish and soft silicone strap that is lightweight, durable, and hypoallergenic. The case is made of ABS + PC material, lightweight and comfortable to wear. The clear display offers a smooth touch experience. This is a thoughtful gift for loved ones, friends, or yourself. - Quiet alarm with strong vibration: Supports up to 6 independent vibration alarms. No daily on/off required. The silent, strong vibration ensures you are alerted without disturbing others. Ideal for discreet reminders such as bathroom breaks, homework, medication, hydration, waking up, exercise, daily planning, or routine tracking. - Multifunctional: Displays time, date, and day of the week. Includes battery indicator, 6 alarm groups, 12/24-hour format, countdown timer, stopwatch, and temperature measurement. Practical for more than just wake-up alerts—use it for all-day personal reminders, such as scheduling meetings or medication times. - Rechargeable and waterproof: Designed to be waterproof and sweat-resistant, suitable for use during handwashing or in rainy conditions. The long-lasting rechargeable battery provides up to 30 days of operation on a full charge. Charge quickly and conveniently via the built-in USB port, compatible with power banks and standard USB chargers. - Easy to use: Simple setup with no Bluetooth or app connection required. All settings are programmed directly on the device. Features power-off memory to retain all alarm settings, so there's no need to reset after turning off. Compact and portable, fits easily in a pocket or bag. Material: Silicone + ABS Battery capacity: 75mAh 3.7V Operating environment: -10°C to 50°C Waterproof rating: IPX5 Charging voltage: DC 5V (built-in USB allows direct charging from power bank) Functions: 1. Body temperature monitoring: Automatically measures body temperature throughout the day. If temperature exceeds 37.3°C, the device vibrates to alert. 2. Time and date display with adjustable settings 3. Vibration alarm with support for up to 6 alarm groups 4. Countdown timer and stopwatch 5. Fully charged battery lasts approximately 30 days