LILYGO T-Watch S3 is an ESP32-S3 WiFi and Bluetooth LE smartwatch with LoRa connectivity, and other interesting features such as an RTC, audio support, a vibration motor, and an infrared transmitter to control home appliances.
The watch integrates a 1.54-inch color LCD display with capacitive touch, a button to turn on and off the device, and a USB port to charge the included 400 mAh battery. The T-Watch S3 sells in silver or “gun color” with a black wrist strap.
T-Watch S3 specifications:
- Wireless MCU – Espressif Systems ESP32-S3 dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration, 512KB RAM, 8MB PSRAM, 16MB flash, WiFi 4 and Bluetooth LE wireless connectivity
- 2.4 GHz WiFi 4 (802.11 b/g/n)
- Bluetooth LE 5.0
- Semtech SX1262 LoRa RF transceiver: 433 MHz, 868 MHz, 915 MHz
- Display – 1.54-inch 16-bit color LCD display with 240×240 resolution, capacitive touch; ST7789V SPI controller
- Audio – Built-in PDM microphone, MAX98357A class-D amplifier
- USB – 1x Micro USB OTG port
- Sensor – BMA423 3-axis acceleration sensor
- Power button (2S press: ON; 6S press: OFF)
- DRV2605 haptic driver motor
- IR transmitter
- Power Supply
- Battery – 400mAh
- AXP2101 PMIC
- Dimensions – Watch face: 47.45 x 40 x 13 mm; strap: 272mm long
- Weight – TBD
The company mentions support for the Arduino IDE, ESP-IDF, VS Code, and MicroPython, but the TTGO T-Watch Library on GitHub only comes with Arduino samples. Those include the factory testing program, and plenty of code samples for the display, LoRa connectivity, LVGL library, audio playback, the built-in IR transmitter, the RTC, vibration motor, and so on.
LILYGO has been making ESP32 smartwatches for several years starting with the “T-Watch 2019” with a really thick design, but shortly following with more refined designs, and various new features. The T-Watch S3 is the first model to support LoRa connectivity and offers the most features from audio support to RTC.
LILYGO is selling the T-Watch S3 on Aliexpress for about $47 including shipping.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.