Projection Clock

1)The Projection clock can project the time to the wall or ceiling for about 10 seconds when powered by AA batteries, but can project the time 24 hours when powered by AC adapter.
2)Display indoor and outdoorTemperature at the same time. °C and °F can be swtichable
3)Indoor Temperature Measuring range: 0°C to +50°C
4)Outdoor Temperature Measuring Range: -20°C to +70°C
5)Wireless signal distance: MAX. 100 Meters in open area
6)Tolerance/Accuracy of temperature measuring: +/- 1°C /2 °F
7)WWVB Radio Controlled Clock
8)When you choose AC Adapter Power, the display is clear in the screen. You can adjust the brightness of the backlight in the screen with 3 opitions Bright (Clear projection)- dim (Clear projection) - off (No projection). And the dim backlight is soft enough that it is not distracting for sleeping.
9)Adjustable Backlight when choosed AC Adatper Power
10) Dual Power: DC 5V or 2 AAA batteries (Not included)