The Sonic Boom SB200ss has been designed as a cost effective travel& bedside alarm clock, with a large easy to read display and bedshaker,  It also is equipped with  Dual Power & Dual Time features it comes with a 110 volt power supply, will work with220 volt transformers. Clock also has two switches one allowing user toswitch from 50Hz 110 volts to 60Hz 220 volts. This feature keeps propertime with 110 or 220 volts. Another switch allows you to select 12/24hour time.

• Dual power capability 110 & 220 volts & 12/24 hour time.
• Complete with a hi/low dimmer switch to sleep better at night.
• Packaged with our newest most powerful 12-volt bed shaker.
• Complete with a loud 113db adjustable tone & volume control.
• Battery backup to maintain the proper time in the event of a power outage.