Brand: LittleBits. MPN: 650-0003. You know what a button is! It's a classic: big round and springy. Push to turn your creation on and release to turn it off. Snap a buzzer in place after your button to sound out signals in morse code! HOW IT WORKS The button is like a door. When you press it the door opens letting the signal pass through the Bit and on to the next Bits in the circuit. The button is a momentary switch you must continue to press it for the signal to flow. When you release the button the door closes stopping the signal from passing on to other Bits. users: Ages 8+ size: Height 2.54 cm Width 3.75 cm Length 19.05 cm weight: 0.01 kg/ 0.02lbs.