Crystal-clear display with 6 brightness levelsThis compact digital clock has an extremely clear display with 6 brightness levels, ensuring perfect readability in any environment. It is ideal for your bed, desk, or bedside. Note: The clock can only be powered by an electrical outlet. Batteries cannot operate the clock; they only serve as a memory in case of a power outage. Very loud alarm with 5-level loudness adjustmentWake up with the alarm sound you prefer, ranging from a gentle 65 dB to a powerful 85 dB. Adjust your alarm experience and start your day with the right sound USB-C Plug Clock with Memory FunctionUniversal compatibility with a USB-C plug and backup with two AAA batteries ensures that your clock retains the time and settings even in the event of a power outage, saving you from any worries. (Two AAA batteries are not included) Easy-to-use Front ControlsAll buttons and settings are conveniently located on the front, making this digital clock also very user-friendly for seniors, boys, girls, and children 12/24 Hour Format & Adjustable Sleep FunctionEasy to switch between 12-hour and 24-hour format. In addition, you can set the sleep time ranging from 1 to 15 minutes, giving you the flexibility you need. Note: To operate the alarm with the cable and plug provided in the package, the battery only serves as a memory function!