Features:Large dual-color LED display. 12H/24H time format. Touch keys for control (with sound). One alarm function: turn on/off freely. Audio controls: You can wake him up by clapping his hands or knocking on the table. The full-color LED changes colors automatically. Hour-long ringtone with flash backlight remind.7 kinds of switchable time, temperature, date and week display modes. Adopting real-time clock chip, the data will not lose when power off with backup battery (not included). USB DC5V for power supply, convenient and quick to use. With a transparent acrylic case, the components can be well protected. A great DIY kit watch for electronics enthusiasts, easy to install. Installation Instructions: