The LED lets you know when the camera is ready to shoot. Film winding and rewinding is entirely automatic, and the camera also allows mid-roll rewind. The KB32 uses only 2 AAA batteries, which has an estimated battery life of six 24-exposure rolls. The camera automatically shuts down after a period of nonuse to conserve power. At only 5.3 ounces, the camera can be taken practically anywhere without effort.