Modern Desk Crank Design: This manual standing desk can be height adjusted to your comfort to promote better blood circulation and posture. The adjustable table legs can help reduce neck and back strain while working. Easy Height Adjustments: Increae the height of the table from 29.1" to 47.6" inchese tall in just a few seconds. The mechanical standing desk requires no electrical power. | Mount-It 55W Manual Adjustable Standing Desk, Black (MI-7981) | Quill