Usage Tips: F4 Gravity Sensor Flipping Digital Timer Mini Cube Countdown Alarm Clock Cooking Study Stopwatch - White [Two Modes] This timer features gravity-sensing flip countdown with a built-in gravity sensor chip. You can flip the numbers 5/10/30/45/60 to the top to start the countdown, making it simple and straightforward to use. The manual mode allows for DIY customization, similar to a regular digital timer, perfect for various scenarios such as studying, working, and home use [3-Level Volume Alert] Choose from different volume reminders to suit your environment. The maximum volume (90-100dB) is ideal for important reminders, ensuring you won't miss the loud alarm even if you're in another room. The medium volume (70-80dB) is suitable for reading without distractions, while the silent mode (0dB) is perfect for study rooms or libraries, with a flash alert that won't disturb others [Compact or Rechargeable] Compact size, this timer is easy to carry and can fit into any pocket or bag. Its rechargeable lithium battery and USB-C charging port eliminate the need for extra battery purchases, making it more environmentally friendly [Multi-Scenario Application] This new-generation digital rotating timer is suitable for students and the whole family. Whether it's a kitchen cooking timer, work, study, sports, fitness, yoga, beauty, or gaming, it helps you accurately manage time, effectively assisting children in cultivating a sense of time balance between entertainment and learning Specifications: Product material: ABS Product size: 44*44*46mm/1.7*1.7*1.8 inches Battery capacity: 500mAh, 3.7V Working temperature: 0-50 Standby power consumption: