This eyepiece is produced by Jaeger-LeCoultre and is specially designed for servicing watch movements. The main body is turned from solid wood, showing a smooth bell-shaped outline, and the wood texture is naturally warm and moist. The upper metal hoop is engraved with the brand's logo. The eyepiece has a built-in optical glass lens that can magnify and observe the internal details of the movement. It is a portable tool used by watch technicians when inspecting and appreciating watches. The shape takes into account both the hand feel and optical usage requirements. The surface of the wooden handle has slight traces of age, the metal ring is engraved with the brand logo, and the lens is transparent with no obvious scratches; it comes with the original brand packaging box and foam lining.