Six-level weather forecast indicator icons: Sunny, Partly Sunny, Cloudy, Light Rain, Heavy Rain, Snow, and 12-hour weather forecast. Projection function: Time, Indoor/Outdoor/Indoor Temperature and Humidity, Front/Back Display (180-degree switch), Two-level projection brightness switch. Seven language display: English, German, Italian, French, Spanish, Dutch, and Danish. Dual alarm settings: Monday and Friday (M-F), Saturday and Sunday (S-S), Monday and Sunday (M-F, S-S), default snooze time of 5 minutes. Indoor temperature display and detection range: -9.9°C to 50°C (15°F to 122°F), detection time 30 seconds, detection accuracy 0.1°C. Outdoor temperature display and detection range: -40°C to 60°C (-40°F to 140°F), detection time 30 seconds, detection accuracy 0.1°C. Indoor climate comfort display, indoor thermal index display. Indoor/outdoor temperature change trend indication. Outdoor dew point temperature display. Outdoor high and low temperature and frost point alarm function. LED backlight: four levels of brightness: brightest-medium-low-off. Environmental comfort level indication. Power supply voltage: 2.5V-3.3V. Static current: <30uA. Power supply: Main unit: 2*AAA batteries (not included in shipment) or USB power cable; Transmitter: 2*AAA batteries (not included in shipment). Color: Black Material: Plastic+Metal Package Contents: 1*USB cable ,1*Projector weather clock, 1*Transmitter