The Wahl Peanut is a compact, corded clipper and trimmer built around a rotary motor rather than the simpler magnetic motors found in many similarly sized mini trimmers. It's small enough to sit in the palm of the hand, which is the point: Wahl positions the Peanut as a detail tool for outlining, touch-ups, and close trim work rather than a primary clipper for cutting an entire head of hair, and it has been sold by Wahl and its retail partners as one of the best-selling professional trimmers in the United States.
It runs on a 7-foot, chemical-resistant cord and uses a quick-detach blade that snaps off for cleaning, oiling, and replacement. The Peanut ships with four guide combs, in 1/8, 1/4, 3/8, and 1/2 inch lengths, which cover basic guarded lengths but are fewer options than a dedicated clipper guide set.
Because it's built for precision rather than bulk cutting, the Peanut is most useful as the second tool in a lineup, brought out after the main clipper to clean up necklines, edges, and beard or mustache detail, rather than as a standalone clipper for a full haircut. Its rotary motor gives it steadier, more consistent power at this size than a typical magnetic-motor mini trimmer, which is part of why barbers keep reaching for it for detail work despite its small size.