Features 1、Complies with the Bluetooth v4.2BR / EDR and BLE standards protocol. 2、Equipped with RF NZIF receiver Class-1, Class-2 and Class-3 transmitter AFH with -98dBm sensitivity. 3、Support audio for CVSD and for SBC Audio, providing ultra clear HD sound. 4、Support integrated external memory card slot. 5、Support Buletooth and WiFi functions with outstanding performance. Specification Features: Complies with the Bluetooth v4.2BR / EDR and BLE standards protocol. Equipped with RF NZIF receiver Class-1, Class-2 and Class-3 transmitter AFH with -98dBm sensitivity. Support audio for CVSD and for SBC Audio, providing ultra clear HD sound. Support integrated external memory card slot. Support Buletooth and WiFi functions with outstanding performance. Specifications: Size: Approx. 69.13*28.41*8.45mm/2.72*1.12*0.33inch < Hardware Specifications Chipset ESPRESSIF-ESP32-DOWDQ6 240MHz Xtensa single-/dual-core 32-bit LX6 microprocessor FLASH QSPI flash/for SRAM, up to 4 x 16 MB for SRAM 520 kB for SRAM + 8MBytes External for 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 69.13*28.41*8.45mm 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 WIFI Description Standard for 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 Description protocol meet bluetooth v4.2BR/EDR and BLE standard radio frequency with -98dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH audio frequency CVSD&for SBC audio frequency Software Specification Description wifi Mode Station/SoftAP/SoftAP+Station/P2P security mechanism WPA/WPA2/WPA2-Enterprise/WPS Encryption Type for AES/RSA/ECC/SHA firmware upgrade for UART download/OTA（Through network/host to download and write firmware） Software Development Support cloud server development /SDK for user firmware development networking protocol for IPv4, for IPv6, for SSL, for TCP/UDP/HTTP/FTP/MQTT User Configuration AT + Instruction set, cloud server, for android/iOS app OS for FreeRT OS Package List: 1 * Camera Module 1 * Power Cable