9. 7 INCHES LED CLOCK: This digital clock is suitable for living room, bedroom, office, coffee shop, gym , warehouse, guesthouse, basement and so on multifunction digital clock: can be used as a alarm clock with waking up and snoozing function; two display modes for 12 /24 hour desk clock & wall clock: it has notches on the back for mounting, stand is removable, can be easily hung on the wall as a wall clock, or place it on the desktop arbitrarily. 9. 8 ft. Usb power cable: supply the power for LED clock ( The USB cable can connect power from long distance, you can hide the long cable behind some items ) working AC power: The clock is powered by USB cable only, and built-in a low capacity battery for recording time when cutting off power. Q&A: If the 9. 7-inch clock does not clearly display the time, please adjust the brightness from L-01 to L-03 intensity levels with three buttons "-" "+" "SET" of the clock to clearly show time at different light intensities. warm tips: The temperature display function can't work normally currently, we are still working on this because of software bug, hope you can understand