Usage Tips:Digital Wall Clock Battery PoweredThe digital clock is powered by batteries (batteries not included) or USB data. It is easy to use and can be carried around without worrying about not being able to find a power outlet. Wall Clock with Large NumbersThe wall clock uses large and bold fonts to display date information and temperature (/) information. Even when hung on the wall, it allows the elderly, children, and adults to accurately obtain time, date, and temperature information. Wall Clock/Desk ClockThere are two positioning hanging holes and a storage/mounting bracket on the back of the electronic clock. It can be hung on the wall as a wall clock or placed on the desktop as a desk clock. Silent ClockThe clock adopts a silent design without a background light function. It will not glow in the middle of the night, creating a dark, quiet, and comfortable sleeping environment. The silent clock is also used in scenes such as bedrooms, living rooms, offices, schools, garages, farmhouses, kitchens, gyms, stations, etc., without being affected by power supply.