Multi-function alarm clock - It is not only used as a digital clock, but also serves as an alarm clock, thermometer, calendar, desk decoration and FM radio. Built-in AM / FM radio with telescopic antenna - FM clock radio with powerful reception and clear sound. Tune to your favorite radio stations to enjoy daily news, weather forecast, music, funny stories, etc. anywhere. A wide range of programs available to save up to 20 stations (FM: 87.5-108.0 MHz) during automatic station search or preset tuning. Two power modes - it can be powered by USB cable or 4 AAA Batteries, don't worry about lack of power. Please note that our products are USB cable but not include battery. Two working modes - one is normal mode with display always on. The other is power saving mode or sleep mode, it can be voice controlled, which means we can wake it up by pressing or making noise up to 60dB when the screen is off .. Perfect size for various occasions - the digital multi-function LED alarm clock is USB/battery powered and the alarm clock is easy to carry. Suitable for bed, bedroom, school, office, travel, outdoor. A good choice for men, children and children.