LILYGO® TTGO T-Watch ESP32 WIFI bluetooth S78G GPS LORA Capacitive Touch Screen Programmable Watch Open Source Smart Watch
Chipset | ESP32, dual-core MCU, PMU power management |
FLASH | QSPI flash 16MB |
SRAM | 520 kB SRAM / PSRAM 8MB |
Button | power key , IO36 |
Extended function | |
USB to TTL | CP2104 |
Modular interface | UART, SPI, SDIO, I2C, LED PWM , PWM, I2S, IRGPIO, capacitor touch sensor, ADC, DACLNA |
On-board clock | 40MHz crystal oscillator |
Working voltage | 2.7V-3.6V |
Working current | about 70mA |
Sleep current | about 3mA |
Working temperature | -40℃ ~ +85℃ |
Size & Weight | 46.47 x 43 x 20.4mm 43.19g |
Display | 1.54 inch LCD capacitive touch screen |
Sensor | BMA423 three accelerometer, built-in step counting algorithm, activity recognition / tracking, advanced gesture recognition. |
RTC clock | PCF8563 |
Power Supply Specifications:
Power Supply | USB 5V/1A |
Charging current | 500mA |
Battery | 3.7V lithium battery |
Wi-Fi:
Standard | FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC |
Protocol | 802.11 b/g/n(802.11n, speed up to150Mbps) A-MPDU and A-MSDU polymerization, support 0.4μS Protection interval |
Frequency | 2.4GHz~2.5GHz(2400M~2483.5M) |
Transmit Power | 22dBm |
Communication distance | 300m |
Bluetooth | |
Protocol | meet bluetooth V4.2 BR/EDR and BLE standard |
Radio frequency | with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH |
Audio frequency | CVSD&SBC audio frequency |
Software Specifications:
Wi-Fi Mode | Station/SoftAP/SoftAP+Station/P2P |
Security mechanism | WPA/WPA2/WPA2-Enterprise/WPS |
Encryption Type | AES/RSA/ECC/SHA |
Firmware upgrade | UART download/OTA (Through network/host to download and write firmware) |
Software Development | Support cloud server development /SDK for user firmware development |
Networking protocol | IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT |
User Configuration | AT + Instruction set, cloud server, android/iOSapp |
OS | FreeRTOS |

Appearance Specifications:
T-Watch onboard:
1.54 inch LCD capacitive touch screen: ST7789V
Touch screen chip: FT5206
Accelerometer: BMA423
PMU power management: AXP202
RTC clock module: PCF8563
Expand the interface:
Support microphone: MSM261S4030H0
Support SPI TF memory card
2 digital I/Os: GPIO25, GPIO26 (supports ADC, DAC)
Support I2C, UART, SPI communication protocol

Product Details:
1 x GPS and LORA (s78G) White version
T-Watch S78G GPS LORA Optional:


Type |
S78G GPS LORA, S78G Black, S78G White |
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(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.
Shipping and Delivery Estimates
We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.
Note:
(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.
(2) Business days do not include Saturday/Sunday and any public holidays.
(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.
(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
for more information please visit our Refunds & Returns Policy page.