Discovery Expedition Time/ Temp Sound FX Alarm Clock Enjoy any one of the 6 sounds of nature at the touch of a button Alarm can be set to any sound including the radio, ocean waves, fireplace, flowing stream, paradise, spring rain, and dusk Ambient blue clock face can be brightened, dimmed, or turned off for customized comfort Projects time and indoor/outdoor temperature display onto any wall and wirelessly transmits the outdoor temperature directly from the remote 3-channel sensor to the clock Transmitter requires (2) AAA batteries (not included)