roll top desk light

Common controls include touch-activated sensors, base rocker switches, and tap-style on/off-level switches. Many models also offer dimming (either stepless full-range or multi-level) and dedicated night-light controls.

Most lamps are mains-powered with varying cord lengths. Many also include charging features such as wireless charging pads, USB-A and USB-C ports, and some bases that include a powered outlet. Where specified, USB ports are listed at about 1.0 A or 2.0 A.

The group includes lamps with integrated (non-removable) LED arrays and lamps that accept standard Edison medium-base (E26) bulbs. Listed wattages span low-watt integrated LEDs (around 5–9 W, with individual listings such as 8 W) up to E26 options rated as high as 150 W; a 60 W value also appears in the listings.

Many models offer multiple adjustment points: articulated arms and adjustable heights, lamp heads that swivel and tilt (some list up to about 240°), and combinations of rotations and pivots to allow both focused task lighting and wider illumination.

Some integrated LEDs are listed at 3000 K with about 80 CRI, while others are listed at 4000 K with about 82 CRI. One model also shows a lumen value of 780 lm.

Common built-in features include USB-A and USB-C charging ports, powered outlets in the lamp base, and phone cradles or pull-out trays to hold a smartphone while charging. USB ports in listings are typically rated at about 1 A or 2 A depending on the model.