Internet Time SynchronizedJust connect the Bluetooth "C010 Aarm Clock" and the loud alarm clock can automatically and accurately match the time. Automatically update the date and time after plugging in, to ensure the accuracy of the time and avoid the trouble of manual setting.Tip: Bluetooth connection is only to calibrate the time, it will not involve any privacy related information, please feel free to use it. 15 Wake-Up Sounds- Our lound alarm clock for heavy sleepers adults offers you 15 different wake-up sounds, catering to your preferences for various music styles, rhythms, or sounds, ensuring you wake up in the morning the way you like. Super Loud Alarm Clock- This super loud alarm clock for heavy sleepers adults boasts a maximum volume of 120dB, ensuring that you'll be awakened promptly and effectively while you're asleep. The alarm clock for heavy sleepers suitable for children, teenagers, adults, and those with severe sleeping conditions. RGB D