LILYGO® TTGO T-Watch-2020 ESP32 Main Chip 1.54 Inch Touch Display Programmable Wearable Environmental Interaction Watch

About T WATCH 2020 T WATCH 2020 has three versions now T WATCH 2020 v1 version this item T WATCH 2020 V2 version Product ID 1823064 and T WATCH 2020 V3 version Product ID 1823085 where V3 is T WATCH 2020 V1 based on the addition of PDM Microphone T WATCH 2020 V2 version replaces the function of MAX98357 of V1 version with GPS function and expands to TF card holder DRV2605L tactile motor control is added to the vibration motor function and multiple vibration modes can be set Product Description  Hardware Specifications ChipsetESP32 dual core MCU PMU power managementFLASHQSPI flash 16MB SRAM 520 KB SRAM PSRAM8MBButtonPower key USB to TTLCP2104On board clock40MHz crystal oscillator Working voltage2 7V 3 6VWorking current Sleep current Working temperature range 40℃ 85℃Weight58 5gDisplay 1 54 inch LCD capacitive touch screenSensor BMA423 three axis accelerometer built in step counting algorithm activity recognition tracking advanced gesture recognition RTC clock PCF8563Power Supply Specifications Power SupplyMicro USB 5V 1A Charging currentThe charging current is programmable and self adjustable default 350mA Battery3 7V lithium batteryWi 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 intervalFrequency range2 4GHz 2 5GHz 2400M 2483 5M Transmit Power22dBmCommunication distance300mBluetooth ProtocolMeet bluetooth v4 2BR EDR and BLE standardRadio freque