TTGO T-Watch-2020 ESP32 Main Chip Programmable Wearable Watch with 1.54 Inch Touch Screen

Product Information B>
Hardware specifications.
1. Chipset: ESP32, Dual-Core MCU, PMU Power Management
2. Flash: QSPI Flash 16 MB
3. SRAM: 520KB SRAM / PSRAM 8MB
4. Button: Power key
5. USB to TTL: CP2104
6. On-board clock: 40 MHz 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 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)

Wifi
1. Standard: FCC / CE-RED / IC / TELEC / KCC / SRRC / NCC (ESP32 chip)
2. Protocol: 802.11 B/G/N (802.11n, speed up to 100 Mbps) A-MPDU and 3. A-MSDU polymerization, support for 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 and Class-3 Emit AFH
3. Audio frequency: CVSD and SBC audio frequency

Software Specifications
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 update: Download UART/OTA??? via network/host to download and write firmware
5. Software development: Support cloud server development / SDK for user firmware development
6. Network 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 Setup B>
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 B>
1. Flash: 16 MB
2. P SRAM: 8 MB
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 Micro Processor LX6, the operating frequency is 240MHz, up to 600DMIPS Ultra-Low Power Power Consumption Coprocessor