Description <br> Dual-core Arm M0+ processor, flexible clock running up to 133 MHz <br> 264KB of , and 4MB of onboard Flash memory <br> Onboard CH9120 with integrated IP protocol stack <br> 14 x multi-function GPIO pins, compatible with some HATs <br> Castellated module allows soldering direct to carrier boards <br> <br> Drag-and-drop programming using mass storage over USB <br> Temperature sensor <br> 8 x Programmable I/O (PIO) state machines for custom peripheral support <br> Colour:blue <br> Material:PC+Metal <br> <br> Package Contents: <br> 1 x Mini Development Board <br> <br> Only the above package content, other products are not included. <br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. <br>