Pecos and higley Added Keyboard Tray: This sit stand desk is configured with a slide-out keyboard tray (23.6" x 8.6"), offering extra space for your keyboard & mouse or other office essentials, providing ergonomic cozy typing experience during a long work day Electric Lifting System: JOY worker height adjustable standing desk has reliable motor (over 50000 times fatigue test) that can support height adjustment from 28.3" to 46.5" at an average speed 25mm(0.9")/second with low noise (under 55 DB) while running, even lower than normal talk voice Memory Preset & Anti-collision Tech: Standing desktop workstation has 2 programmable memory height buttons, ensuring your quick transition between sitting and standing postures. If the electrical adjustable desk encounters obstacles when lifting, it will move a short distance in the opposite direction to avoid possible damage or injury Stable Construction & Solid Material: The splice stand up desk applied an industrial-grade alloy steel frame combined with a solid wood-grained desktop that allows a 154 lbs load bearing capacity. Even the slide of the keyboard tray is designed to prevent rust and ensure long-lasting stability and duarability 8612