1、High-quality fisheye lens, using high-quality material, the image is real and not distorted 2、Equipped with OV2640 2Megapixel camera and IPS panel ST7789/3 inch 3、Fine workmanship, corrosion resistance, wear resistance, long service life 4、With external SD card slot, durable, more convenient to use 5、Support Bluetooth and WiFI connection, suitable for a variety of camera lenses Features: High-quality fisheye lens, using high-quality material, the image is real and not distorted. Equipped with OV2640 2Megapixel camera and IPS panel ST7789/ 1.3 inch. Fine workmanship, corrosion resistance, wear resistance, long service life. With external SD card slot, durable, more convenient to use. Support Bluetooth and WiFI connection, suitable for a variety of camera lenses. Specifications: Condition: 100% Brand New Material: PCB 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 Dispaly: 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℃ Size: approx. 69.13* 28.41* 8.45mm / 2.7* 1.1* 0.3in Mic: Msm261s4030h0 SD Card: Integrated External SD Card Slot Power Management IC: IP5306 Power Supply: Usb 5V/1A Charging Current: 1A Battery: 3.7V Lithium Battery Wireless online 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 Bluetooth 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 Audio Frequency Wifi Mode Station: SoftAP/SoftAP+station/P2P Security Mechanism: WPA/WPA2/WPA2-Enterprise/WPS Encryption Type: 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, TCP / UDP / HTTP / FTP / MQTT User Configuration: At + Instruction Set, Cloud Server, Fit for android / iOS app Os: FreeRTOS Package list: 1 * Fisheye Lens 1 * Power Line 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-DIMEANI official store