ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters, and power management module. The entire solution takes up the least amount of printed circuit board area. This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology, power and RF properties best, which is safe, reliable, and scalable to a variety of applications. <br> <br> <br> Features: <br> <br> Indicate LED inside(Green means full& Red means charging) <br> Charging and working could be at the same time. <br> 1 Switch could control the power,1 extra LED could be programmed(Connected with GPIO16) <br> 0.5A charging current,1A output, Full ESP32 pins break out <br> <br> Over charge protection, Over discharge protection, <br> Small volume, easily embedded to other products <br> Strong function with support LWIP protocol, Freertos <br> Supporting three modes: AP, STA, and AP+STA <br> Supporting Lua program, easily to develop <br> <br> <br> Specification: <br> Model: ESP32 <br> Battery: 18650 Battery (not included) <br> Charging current: 0.5A <br> Output current:1A <br> Size: 90*30mm/3.5*1.2in <br> Weight: Approx.26g/0.9oz <br> <br> <br> Package list: <br> 1 x ESP32 Board(18650 Battery is not included)<br> 1Indicate LED inside(Green means full& Red means charging)<br> 2Charging and working could be at the same time.<br> 31 Switch could control the power,1 extra LED could be programmed(Connected with GPIO16)<br> 40.5A charging current,1A output, Full ESP32 pins break out<br> 5Over charge protection,Over discharge protection<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin