[Customer services] 2 years warranty. If you have any quality or use problems with our products, we will replace it with a new one for you, or guide you to use and set it, please just send us a message immediately. [Power Supply] -The small digital clock is only powered by AC adapter (not included): 5V/1A. -USB power cable (included): 1.2m micro USB cable. -AAA battery x2 (not included): only used for time memory after power failure, not for regular power supply. [Multi-function Small Clock] Built-in 2 USB ports can be used for charging smart phones or other devices, display brightness and volume can be adjusted manually, with temperature display (?/? mode), 12/24 hours display, natural light alarm clock with snooze function. [Alarm Clock with FM Radio] 2 alarm clock times can be set, with snooze function, built-in 13 musics or FM radio are for your choice as alarm ringtones, and you can set the snooze time for 5-60 minutes to get extra sleep (3 times), then the digital alarm clock will ring again. The small table clock was built-in FM radio function of 76-108MHz frequency band broadcast. [5.3 IN HD LCD Clock Display] This digital clock for desk is a large number alarm clock for bedroom, living room, Kitchen, Gym, Office, Meeting Room, Classroom and so on. You can also adjust the display brightness manually by 0% - 100% as your needs, the large number digital clock shows date time clear and big enough to be visible in the dark night, strong light or at long distance.
