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. _x000D_ _x000D_ _x000D_ Features:_x000D_ _x000D_ Indicate LED inside(Green means full& Red means charging) _x000D_ Charging and working could be at the same time. _x000D_ 1 Switch could control the power,1 extra LED could be programmed(Connected with GPIO16) _x000D_ 0.5A charging current,1A output, Full ESP32 pins break out_x000D_ _x000D_ Over charge protection, Over discharge protection, _x000D_ Small volume, easily embedded to other products _x000D_ Strong function with support LWIP protocol, Freertos _x000D_ Supporting three modes: AP, STA, and AP+STA _x000D_ Supporting Lua program, easily to develop _x000D_ _x000D_ _x000D_ Specification: _x000D_ Model: ESP32 _x000D_ Battery: 18650 Battery (not included) _x000D_ Charging current: 0.5A _x000D_ Output current:1A _x000D_ Size: 90*30mm/3.5*1.2in _x000D_ Weight: Approx.26g/0.9oz _x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x ESP32 Board(18650 Battery is not included) 1Indicate LED inside(Green means full& Red means charging) 2Charging and working could be at the same time. 31 Switch could control the power,1 extra LED could be programmed(Connected with GPIO16) 40.5A charging current,1A output, Full ESP32 pins break out 5Over charge protection,Over discharge protection 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