STAX Junior are beautifully illuminated construction blocks that use LED technology, but are still 100% compatible with existing traditional building blocks. Using our patented system, each Stax will magically light up as it is connected to a power base or any lit Stax. No special connectors or wires are needed. Just stack them and they light up!
 
These LED light blocks can be used individually or together with DUPLO®. The USB Power base has 4 different lighting modes, always on, flashing, fading, with sound activation or 15min auto-off. STAX Junior Unlimited includes the following items: 102x STAX Junior blocks, 1x STAX Junior USB Power Base (Works wireless with 3 AAA batteries or with a USB cable) and 1x USB Cable.