Feature: 1. 180 Degree Rotation: Digital projection alarm clock can be rotated 180 degrees to project the time on the wall or ceiling. 2. Projection Function: Projection alarm clock can project distance up to 5m/23.6ft and projection height up to 60 cm/23.6in. 3. Focusing Knob: Digital projection alarm clock has a focusing knob to focus the numbers, large and clear. 4. Multifunctional: Bedside alarm clock projector with alarm, repeat, temperature and humidity functions for temperature and humidity monitoring for all weather. 5. Easy to Operate: The projection alarm clock can be used with a USB cable plugged in or with batteries, making it simple and practical. Specification: Item Type: Projection Alarm Clock Material: Plastic Usage: 1. Plug in the USB cable to use 2. Use the battery Battery Note: 2 x AAA Batteries (Not Shipped with Batteries) Alarm clock should not use high capacity alkaline batteries (such as for Nanfu batteries), please use ordinary carbon batteries, otherwise it is easy to appear chaotic appearance, because high capacity batteries easily burned circuit boards The brightness of the screen is brighter when using the battery than when using the power supply. Do not turn on/off the alarm clock (power or battery mode) often, otherwise it may not work temporarily, then stop the alarm clock for more than 30 minutes before turning on the power or battery.. Package List: 1 x Projection Alarm Clock1 x USB Cable1 x Chinese and English Manual