Bestar Prestige + L-Desk with Hutch Including Electric Height Adjustable Table, Chocolate The work surfaces are made of a durable 1" commercial grade work surface with melamine finish that resist scratches, stains and wears The electric mechanism allows you to quickly and quietly adjust the height of the table from 28" to 45". Voltage : 110V The control button is located on the front edge of the work surface for an easy access The drawers are on ball-bearing slides and the keyboard shelf has double extension ball-bearing slides for a smooth and quiet operation The station is fully reversible