This is a very small light sensor. A photo resistor (also known as a photodector, or photocell) changes resistance depending on the amount of light it is exposed to.
This is a MLT-42-F tracked robot platform and is equipped with flipper arms, 42mm motors, a motor controller, and FLYSKY remote control. This rugged robot platform the treaded robot handles up to 15lbs of additional payload and travels 134ft/min.
900 MHz Rubber Duck Antenna - Male Type F