Charging and work can be done simultaneously.Overcharge protection and over discharge protection.An additional LED can be set.Complete ESP32 pin breakout.Item Name: WiFi bluetooth-compatible ModuleMaterial: PCChipset: ESPRESSIF-ESP32-WROVER 240MHzFlash: QSPI Flash/SRAM, Max 32MBSRAM: 520KB SRAMKey: Reset, BOOTSwitch: BAT SwitchPower Indicator: RedUSB to TTL: CP2104Modular Interface: SD card, UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, Capacitive Touch Sensor, ADC, DACLNA PreamplifierOnboard Clock: 40MHz OscillatorWorking Voltage: 2.3V-3.6VWorking Current: About 40mASleep Current: 1mAPower: USB 5V/1ACharging Current: 1000mABattery: 3.7V Lithium Battery (Not Included)WiFi:Standard: FCC/CE/TELEC/KCC/SRRC/NCCProtocol: 802.11 b/g/n/e/i (802.11n, Speed up to 150Mbps) A-MPDU and A-MSDU Aggregation, Support 0.4μS Guard IntervalFrequency Range: 2.4GHz-2.5GHz (2400M-2483.5M)Transmit Power: 22dBmCommunication Distance: 300mBluetooth:Protocol: bluetooth-compatible V4.2BR/EDR and BLE StandardsRF: NZIF Receiver Class-1, Class-2 and Class-3 Transmitter AFH with -98dBm SensitivityAudio: CVSD & SBC AudioSize: 9.1cm x 3.2cm x 1.9cm/3.58" x 1.26" x 0.75" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x WiFi bluetooth-compatible Module