This clock is made of imitation wood, not real wood and is 10.6 x 5.1 x 5.1 inches. It has a 12/24-hour mode display, perpetual calendar, C/F thermometer and an Alarm function. Includes three sets of alarm clocks, date, temperature and voice-activated sensors, a display time can be fixed in a permanent mode. Voice-activated sensors work by voice, clap of your hands, or some equivalent noise. Has a sound control switch to regulate freedom of movement. Brightness lowers to 50% from 6pm to 7am automatically which is good for eyes. Built-in button cell battery backup keeps time device working once DC power is off.