The SM-44 5x SensorMag Magnifier with Dust Blaster from Carson Optical helps you clean your sensor. The 5x power lens is strong enough to help spot small particles and debris. The SensorMag's lens rests inside the camera's lens hole and features adjustable focus to accommodate different size cameras and sensor depths. It also swings 45° out of the way to gain access to the sensor. There are two diameter settings to fit various camera bodies. Illumination is via six LEDs that operate on two included CR2032 batteries. The 1.8 ounce magnifier stores in its own zippered pouch.