Bought for evaluation, never been used. open box, still have original box CD, etc. What you see in the picture is what you will get. EFM32 Giant Gecko Development Kit EFM32GG-DK3750 Silicon Labs' EFM32GG-DK3750 Development Kit provides a complete solution for testing advanced, energy efficient applications using the EFM32 Giant Gecko ARM Cortex-M3 32-bit MCU. From Simplicity Studio you get full access to the kit information and can program the kit with the demos and code examples available for the Giant Gecko. The rich feature set makes the kit an excellent platform for evaluating the Giant Gecko microcontroller, as well as a good starting point for application development.