RCLITE Creative Erasable Memo Board Fluorescent Light Message Board LED Digital Alarm Clock USB 2 Port Hub With Thermometer Calendar Snooze Green Backlight Gift Voice broadcast of time and temperature; Calendar inquiry Digital perpetual calendar display ; Digital thermometer Voice controlled backlight; Automatic hourly chime; 2 sets of USB output charging port Alarm and snooze functions; Intelligent voice; Message board using highlighter Power supply: USB charging port or 3pcs AAA battery (Batteries not included)