Check the listing for details. LittleBits o21 Number. Condition: New. Listed at 24.00 USD. Introducing the LittleBits o21 Number for all the science and nature enthusiasts out there! This educational toy is perfect for those who love exploring the world of electronics and electricity. The brand behind this amazing creation is littleBits, a leading name in the industry known for their innovative and high-quality products. This LittleBits o21 Number is sure to provide endless hours of fun and educational playtime. With its numerous features and capabilities, it is a must-have for anyone interested in science, technology, engineering, and mathematics (STEM). Get your hands on this amazing product today and experience the wonders of the world of electronics! This number bet displays information that it receives from the bits before it. It’s a great way to measure the input from sensors or count things like the score in a game.