LILYGO® TTGO T-Watch Upgraded Version SIM800L GPS LORA Programmable And Networked Open Source Smart Box Wearable Device

Hardware Specifications ChipsetESP32 dual core MCU PMU power managementFLASHQSPI flash 16MB SRAM 520 kB SRAM PSRAM 8MBButtonpower key IO36Extended function USB to TTLCP2104 Note Change to CH9102F Modular interfaceUART SPI SDIO I2C LED PWM PWM I2S IRGPIO capacitor touch sensor ADC DACLNA On board clock40MHz crystal oscillator Working voltage2 7V 3 6VWorking currentabout 70mABattery capacity180mASleep currentabout 3mAWorking temperature 40℃ 85℃SizeWeight46 47 x 43 x 20 4mm 43 19gDisplay1 54 inch LCD capacitive touch screenSensorBMA423 three accelerometer built in step counting algorithm activity recognition tracking advanced gesture recognition RTC clockPCF8563 Power Supply Specifications Power SupplyUSB 5V 1ACharging currentCustomizable programmingBattery3 7V lithium battery Wi Fi StandardFCC CE RED IC TELEC KCC SRRC NCCProtocol802 11 b g n 802 11n speed up to150Mbps A MPDU and A MSDU polymerization support 0 4μS Protection intervalFrequency2 4GHz 2 5GHz 2400M 2483 5M Transmit Power22dBmCommunication distance300mBluetooth ProtocolMeet bluetooth V4 2 BR EDR and BLE standardRadio frequencywith 97dBm sensitivity NZIF receiver Class 1 Class 2Class 3 emitter AFHAudio frequencyCVSDSBC audio frequency Software Specifications Wi Fi ModeStation SoftAP SoftAP Station P2PSecurity mechanismWPA WPA2 WPA2 Enterprise WPSEncryption Type AES RSA ECC SHAFirmware upgradeUART download OTA Through network host to download and write firmware Software Developmen