TTGO T-Watch-2020 ESP32 Main Chip 1.54 inch Touch Display Programmable Wearable Watch (Black)

About The Product
Hardware Specifications
1. Chipset: ESP32, dual-core MCU, PMU power management
2. FLASH: QSPI flash 16MB
3. SRAM: 520 KB SRAM / PSRAM 8MB
4. Button: Power key
5. USB to TTL: CP2104
6.On-board clock: 40MHz crystal oscillator
7. Working voltage: 2.7V-3.6V
8. Working temperature range: -40 degree C ~ +85 degree C
9. Weight: 58.5g
10. Display: 1.54 inch LCD capacitive touch screen
11. Sensor: BMA423 three-axis accelerometer, built-in step counting algorithm, activity recognition / tracking, advanced gesture recognition.
12. RTC clock: PCF8563

Power Supply Specifications
1. Power Supply: Micro USB (5V/1A)
2. Charging current: The charging current is programmable and self-adjustable
3. Battery: Lithium battery (not included)

Wi-Fi
1. Standard: FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC(esp32 chip)
2. Protocol: 802.11 b/g/n(802.11n, speed up to150Mbps)A-MPDU and 3. A-MSDU polymerization, support 0.4uS Protection interval
4. Frequency range: 2.4GHz~2.5GHz(2400M~2483.5M)
5. Transmit Power: 22dBm
6. Communication distance: 300m

Bluetooth
1. Protocol: Meet bluetooth v4.2BR/EDR and BLE standard
2. Radio frequency: With -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH
3. Audio frequency: CVSD&SBC audio frequency

Software specification
1. Wi-Fi Mode: Station/SoftAP/SoftAP+Station/P2P
2. Security mechanism: WPA/WPA2/WPA2-Enterprise/WPS
3. Encryption Type: AES/RSA/ECC/SHA
4. Firmware upgrade: UART download/OTA???Through network/host to download and write firmware
5. Software Development: Support cloud server development /SDK for user firmware development
6. Networking protocol: IPv4, IPv6, SSL, TCP, UDP, HTTP, FTP, MQTT
7. User Configuration: AT + Instruction set, cloud server, android/iOS app
8. OS: FreeRTOS

T-Watch Function Configuration
1. Main chip: ESP32
2. 1.54 inch LCD capacitive touch screen: ST7789
3. PMU power management: AXP202
4. Touch screen chip: FT6236U
5. Triaxial accelerometer: BMA423
6. Lithium battery
7. RTC clock module: PCF8563
8. Vibration motor
9. Speaker
10. Infrared signal sensor
11. PDM microphone

ESP-32 Master
1. Flash: 16MB
2. P SRAM: 8MB
3. Memory: 520kiB SRAM
4. Wireless connection: Wi-Fi 802.11b/g/n
5. Bluetooth: V4.2 BR/EDR and BLE
6. Charging method: Micro USB 5V
7. Working voltage: 3.3V
8. CPU: Xtensa dual-core 32-bit LX6 micro processor, operating frequency is 240MHz, up to 600 DMIPS ultra-low power consumption coprocessor