Features： 1、COMPLETE AND USEFUL: This pack contains over various components to help you with fun and easy electrical experiments. 2、VARIOUS ACCESSORIES: Including LED, resistors of different resistance, button, male to male cable, 400 hole breadboard and so on. 3、HUMANIZED DESIGN: Stable in structure and great in performance, this electronics kit enables simple operation and flexible DIY. 4、WIDE COMPATIBLE: Compatible with for R3 component pack starter kit is also compatible with for Raspberry Pi and so on, meeting your needs. 5、RELIABLE PCB: Adopt PCB materials, with reliability and miniaturization, good maintenance and interchangeability. Specification： Item Type: Electronics Kit Material: PCB Use: A basic electronics kit for beginners to learn programming, which can help them learn all the resources of the for R3 development board. Package List： 1 x Male to Male Cable 1 x 400 Hole Breadboard 5 x Red LED Light 6 x Green LED Light 5 x Yellow LED Light 10 x 220ohm Resistor 10 x 1K Resistor 10 x 10K Resistor 10 x 100K Resistor 2 x 5516 Photoresistor 6 x Button 6 x Color Cover 1 x 9V Battery Connector