Allocacoc DN0040RD/HBLEUB Heng Balance Lamp Ellipse Plastic USB, Red. The Allocacoc's Heng Balance Lamp is a series of desk lamps with a twist: where most lamps have a standard switch the Heng Balance Lamp is controlled by two wooden balls. The gentle curve makes it easy to the eye and calming. When you lift the lower wooden ball, it will be attracted by the hanging one and remain suspended in mid-air, switching on the light. The Allocacoc adopted a design where the lighting element is embedded into the frame so the light can find its way out. This creative small lamp is suitable for the study, bedroom, etc. Most types of rooms will benefit from this lamp, as besides a source of light it is also a piece of art.