Features 1、POWERFUL WIRELESS FUNCTION: Using the for ESP WROOM 32 chip, it supports WiFi protocol and Bluetooth V4.2 BR EDR and BLE standards, covering the 2.4‑2.5 GHz frequency range to meet various wireless telecommunication needs. 2、MULTIFUNCTIONAL ONBOARD: For ESP32 wireless module comes with a 0.96 inch Organic Light Emitting Diode screen for intuitive viewing of device information. Meanwhile, one battery holder is built in, which can be directly powered by the battery, and also has charging function with overcharge and overdischarge guard, which makes the use of it more secure. 3、FLEXIBLE POWER SUPPLY: For ESP32 wireless module can be powered by battery or DC 3.6V~5V input, which enables the device to operate stably in various scenes. 4、HIGH SPEED AND STABLE DATA TRANSMISSION: Wireless WiFi Bluetooth module adopts USB to serial chip to extend MicroUSB interface, which can be directly connected to PC for debugging, fast and stable data transmission. 5、ADVANCED INTEGRATED DEVELOPMENT BOARD: The high integration of WiFi and Bluetooth technology makes this product able to complete multiple functions such as data transmission, control and display in a single device, making development more convenient and application scenarios more abundant. Specification Item Type: for ESP32 Wireless Module Material: PCB Interface Type: MicroUSB Onboard Screen: 0.96 Inch Organic Light Emitting Diode Screen Onboard Battery Type: 1x Battery (Not Included) WiFi Protocol: 802.11 b g n d e i k r (802.11n at Speeds up to 150 Mbps), A MPDU and A MSDU Aggregation with 0.4us Guard Interval Support WiFi Standards: FCC CE TELEC KCC Frequency Range: 2.4-2.5 GHz Bluetooth Protocol: Bluetooth V4.2 BR EDR and BLE Compliant Bluetooth Sound: CVSD and SBC Sound Package List 1 x Module 2 x Pins 1 x Manual