The Carson SM-44 5x SensorMag Magnifier will come in handy when you need to clean your sensor. The 5x power lens is strong enough to help spot small particles and debris cluttering your DSLR. When not needed, the lens swings 45deg. out of the way and also has two diameter settings to accommodate various camera bodies. Illumination is achieved by six LEDs that operate on an included #316 button cell battery. It's light enough to toss in your gear bag and is stored in its zippered pouch when not needed.