The MicroBrite plus is an extremely powerful, compact and lightweight portable microscope (MM-300). It is the perfect tool to introduce young children to the joys of science or even for advanced users to enjoy microscopic viewing power on the move. The LED illumination and internal aspheric lens system will ensure users a clear, bright and crisp image. The MicroBrite Plus is powered by 1 AA battery (not included). The MicroBrite Plus is backed by Carson's Limited Lifetime Warranty. Carson will repair or replace your pocket microscope if it is found to have manufacturing defects in materials or workmanship. Please contact Carson for additional warranty details.