The advanced yet simple-to-use replacement LEGO® Technic Small Hub combines and controls LEGO Technic motors, sensors and other LEGO elements to create fun, interactive models. With 2 input/output ports, Bluetooth connectivity, 6-axis gyro and a rechargeable battery with micro USB charging and connection port, the Small Hub is at the heart of any SPIKE™ Essential model and is included in the SPIKE™ Essential Set (45345)

• Features 2 I/O ports, Bluetooth connectivity, 6-axis gyro and a rechargeable lithium-ion battery with micro USB charging and connection port.
• For use with LEGO® Technic motors and sensors.
• Take control of your Small Hub with the free SPIKE™ App for tablets and computers.