Swab LightSwabLight is the world's first innovative and unique product from VisibleDust to enhance and facilitate the DSLR sensor cleaning technique. Package includes : SwabLight Three (3) LR44 batteries (inside SwabLight) One (1) strap Since the sensor of digital camera is buried deep inside the chamber wall and covered with a dark surface to prevent lights from bouncing off, therefore this is a very difficult task for operator to position the swab exactly