The T-Watch S3 by LILYGO, is a cool smartwatch that will catch the attention of folks interested in cost-effectiveness. Fueled by the advanced ESP32-S3 System-on-Chip (SoC), it boasts seamless Wi-Fi and even BLE connectivity. The avant-garde open-source device is outfitted with a 1.54” LCD screen, distinguished by its capacitive touch capabilities, and it comes with full compatibility with the Arduino platform.

In stark contrast to the ESP32-PICO-D4 microcontroller-based SQFMI Watchy, the fresh and innovative smartwatch from LILYGO shines a spotlight on the prowess of the ESP32-S3 SoC, an engineering marvel featuring attributes like the ESP32-S3 – a Dual-core Xtensa 32-bit LX7 processor — demonstrating the capability to reach speeds of up to 240MHz.

For seamless, uninterrupted connectivity, this ingenious smartwatch integrates the Semtech SX1262 low-power LoRa Transceiver, catering to frequencies spanning 433MHz, 868MHz, and 915MHz.

The T-Watch S3 boasts an expansive 1.54″ LCD screen, offering a crystal-clear resolution of 240 x 240 pixels, complemented by the incorporation of cutting-edge capacitive touch technology. Moreover, it seamlessly fuses a class D amplifier and a PDM microphone, enriching the user experience.

A feature of paramount significance within the T-Watch S3 is the inclusion of Texas Instruments’ DRV2605, an adaptable haptic control apparatus meticulously engineered to interface with both ERM and LRA actuators, ensuring a tactile experience like no other.

LILYGO guarantees unfaltering compatibility with an array of programming environments, including MicroPython, ESP-IDF, VS Code, and the Arduino IDE. To enrich the user experience, the company furnishes an extensive reservoir of documentation accessible through its GitHub repository and a dedicated wiki. For a comprehensive overview, we invite you to explore the illustrative demo video provided above.


  • Memory/Storage:
    • 8MB PSRAM
    • 16MB Flash
  • Connectivity:
    • Wi-Fi 802.11 b/g/n
    • BLE V5.0
    • Semtech SX1262
  • Display:
    • 1.54” LCD (ST7789V)
  • USB:
    • 1x USB Port & OTG
  • I/O Peripherals:
    • Microphone
    • Class D amplifier (MAX98357A)
    • 12-bit Triaxial acceleration sensor (BMA423)
  • Other Features:
    • 1x Power button
    • RTC
    • Haptic Driver Motor (DRV2605)
  • Power:
    • Integrated PMU (AXP2101)
    • 3.7V/400mAh LiPo battery 

Price and Availability

The T-Watch S3 enters the market at an enticing starting price of $39.90, making it remarkably accessible to a broad spectrum of consumers. This outstanding device is available for acquisition through LILYGO’s official online emporium or their esteemed AliExpress Store.

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