Hardware Specifications:
1. Chipset: ESPRESSIF-WROVER-B 240MHz Xtensa single-/dual-core 32-bit LX6 microprocessor
2. FLASH: QSPI flash 4MB / PSRAM 8MB
3. SRAM: 520KB SRAM
4. Button: reset
5. Power indicator lamp: red
6. USB to TTL: CH9102F QFN24
7. Modular interface: UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, capacitor touch sensor, ADC, DACLNA pre-amplifier
8. On-board clock: 40MHz crystal oscillator
9. Working voltage: 2.7V-3.6V
10. Working current: about 30mA
11. Working temperature range: -40~ +85 Degrees Celsius
12. Size&weight: 40.27x31.07x8.13mm, 6.42g

Power Supply Specifications:
1. Power Supply: USB 5V/1A
2. Charging current: 500mA
3. Battery: 3.7V lithium battery

WiFi Description:
1. Standard FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC
2. Protocol: 802.11 b/g/n(802.11n, speed up to150Mbps)A-MPDU and A-MSDU polymerization, support 0.4??S Protection interval
3. Frequency range: 2.4GHz~2.5GHz(2400M~2483.5M)
4. Transmit Power: 22dBm
5. Communication distance: 300m

Bluetooth Description:
1. Protocol: meet bluetooth v4.2BR/EDR and BLE standard
2. Radio frequency: with -97dBm sensitivity NZIF receiver Class-1, Class-2&Class-3 emitter AFH
3. Audio frequency: CVSD&SBC audio frequency

Software specification Description:
1. WiFi Mode: Station/SoftAP/SoftAP+Station/P2P
2. Security mechanism: WPA/WPA2/WPA2-Enterprise/WPS
3. Encryption Type : AES/RSA/ECC/SHA
4. Firmware upgrade: UART download/OTA???Through network/host to download and write firmware???
5. Software Development: Support cloud server development /SDK for user firmware development
6. Networking protocol: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT
7. User Configuration: AT + Instruction set, cloud server, Android/iOS APP
8. OS: FreeRTOS