2.4 GHz dual-mode Wifi and Bluetooth development with 4 MB of flash.Powerful, small volume. Support LWIP protocol, Freertos.Support three modes: AP, STA, AP+STA coexistence mode.Compatible with for , Nodemcu, and MicroPython, can be programmed with for the IDE and Lua, can fit on a solderless breadboard, makes your development easier.The 2.4 GHz Wifi and Bluetooth dual-mode chip adopts low-power 40nm technology, which has the best power consumption and RF performance, safe and reliable, and easy to expand to various applications.Colour: blackMaterial: plastic + metalPackage Contents:1 x Development BoardOnly the above package content, other products are not included.Note: Light 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.