TTGO T-Watch-2020 with main ESP32 chip and 1.54-inch touch screen. A programmable, wearable device for environmental interaction.

• Chipset: ESP32, dual-core MCU, PMU power management
• FLASH: QSPI flash 16MB
• SRAM: 520 KB SRAM / PSRAM 8MB
• Button: Power button
• USB: TTL CP2104
• Clock: 40MHz crystal oscillator
• Operating Voltage Range: 2.7V-3.6V
• Operating Current: 60mA
• Sleep Current: 1.7mA
• Operating Temperature Range: -40℃ ~ +85℃
• Weight: 58.5g
• Display: 1.54 inch LCD capacitive touch screen
• Sensor: BMA423 three-axis accelerometer, built-in step counting algorithm, activity recognition/tracking, advanced gesture recognition.
• RTC Clock: PCF8563
• Battery Model: LQ-S1
• Power Supply: Micro USB (5V/1A)
• Charger Current: Charging current is programmable and automatically adjustable (default 380mA)
• Battery: 3.7V lithium
• Wi-Fi: Standards FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC, protocol 802.11 b/g/n (802.11n, speed up to 150Mbps)
• Frequency Range: 2.4GHz~2.5GHz (2400M~2483.5M)
• Transmission Power: 22dBm
• Communication Distance: 300m
• Bluetooth: Bluetooth protocol v4.2 BR/EDR and BLE
• Encryption Type: AES/RSA/ECC/SHA
• Software Upgrade: UART download/OTA (via network/computer for downloading and flashing firmware)
• Software Programming: SDK development support for user firmware development
• Networking Protocol: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT
• User Configuration: AT + commands, cloud server, Android/iOS app

Operating System: FreeRTOS