Car desk features a secured, laptop support system for a productive work environment in your vehicle. The 21" wide top offers an adjustable laptop plate so your laptop can be moved to an ergonomic position for typing. The laptop plate extends past the edge of the desk by another 3", delivering a 24" overall reach from the far edge of the desk. Secure the desk with the seat belt in your vehicle. Secure the laptop to the plate with the supplied hook-and-loop closure and security strap. Universal PDA Mount Cradle holder features a multi-angle ratcheting pedestal and side-grip ratcheting mechanism controlled by a simple push-button release. Your PDA will be held securely in place by the soft, cushioned, side grip arms of the cradle. Built-in, high-speed cooling fan helps keep the unit cool. Design also includes an on/off switch and LED indicator. The 400-watt power inverter with 800-watt, peak surge power plugs into your lighter. RoadMaster Desk fits most cars, smaller SUVs and mini-vans.