The Eos digital LED alarm clock in black features revolutionary new technology, the Acctim Smart Connector. Use your existing USB (Universal Serial Bus) charger to create a multi-purpose power hub. Charge your phone, tablet or other USB (Universal Serial Bus) device directly from your Acctim Smart Connector clock. Eos is also packed with Acctim Autoset technology which means the clock time is set at the factory so it can be turned on with no adjustment & is ready to use. It has high/low brightness, an alarm with the snooze function & 2 USB (Universal Serial Bus) ports. The clock can be powered by the mains, or alternatively by battery which requires 1x CR2032 battery.