1、High quality fisheye lens, true and undistorted color image. 2、Equipped with OV2640 2MP camera and 3 inch display. 3、Extension design, super small outline and thin profile for embedded applications. 4、Easy to install and remove. Low power consumption, suitable for portable equipment. 5、Ideal for equipment manufacturers, experimenters and hobbyists. Features: 1. High quality fisheye lens, true and undistorted color image. 2. Equipped with OV2640 2MP camera and 1.3 inch display. 3. Extension design, super small outline and thin profile for embedded applications. 4. Easy to install and remove. Low power consumption, suitable for portable equipment. 5. Ideal for equipment manufacturers, experimenters and hobbyists. Specifications: Model: H306 Material: PCB Color: Black Chipset: ESPRESSIF-ESP32-DOWDQ6 240MHz Xtensa single-/dual-core 32-bit LX6 microprocessor FLASH: QSPI flash/SRAM, up to 4 x 16 MB SRAM: 520 kB SRAM +  8MBytes External SPRAM KEY: reset display: IPS Panel ST7789/ 1.3 Inch Power indicator lamp: red USB to TTL: CP2104 Camera: OV2640  2Megapixel on-board clock: 40MHz crystal oscillator  working voltage: 2.3V- 3.6V working current: about 160mA working temperature range: -40℃ - +85℃ Mic: MSM261S4030H0 Memory card: Integrated external memory card slot Power management Chip: IP5306 Power Supply: USB 5V/1A charging current: 1A battery: 3.7V lithium battery Standard: FCC/CE/TELEC/KCC/SRRC/NCC protocol: 802.11 b/g/n/e/i ( 802.11n, speed up to150Mbps)A-MPDU and A-MSDU polymerization, support 0.4μS Protection interval frequency range: 2.4GHz- 2.5GHz(2400M- 2483.5M) Transmit Power: 22dBm communication distance: 300m protocol: meet bluetooth v 4.2BR/EDR and BLE standard radio frequency: with -98dBm sensitivity NZIF receiver Class-1, Class-2&Class-3 emitter AFH audio frequency: CVSD&SBC audio frequency wifi Mode: Station/SoftAP/SoftAP+Station/P2P security mechanism: WPA/WPA2/WPA2-Enterprise/WPS Encryption Type: AES/RSA/ECC/SHA firmware upgrade: UART download/OTA（Through network/host to download and write firmware） Software Development: Support cloud server development /SDK for user firmware development networking protocol: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT User Configuration: AT + Instruction set, cloud server, for android/ for iOSapp for OS: FreeRTOS Size: Approx. 28*68 mm/ 1.10* 2.68 inch Packing List: 1 * Lens Module 1 * Power Cable