LILYGO has unveiled the T-Watch Ultra, a multifunctional smartwatch platform that integrates wireless connectivity, location tracking, long-range communication, and intelligent motion sensing in a compact form. Built around the Espressif ESP32-S3, the device is targeted at developers working on embedded, wearable, and remote sensing applications.

The ESP32-S3 used in the T-Watch Ultra features a dual Xtensa LX7 processor with a maximum clock speed of 240 MHz. It includes 16 MB of QSPI flash memory and 8 MB of PSRAM. Wi-Fi 802.11 b/g/n and Bluetooth 5.0 LE are supported, along with hardware acceleration for vector instructions that assist in AI and signal processing tasks. Storage is available through a microSD card slot that supports up to 32 GB formatted in FAT32.

T-Watch Ultra Block Diagram
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Measuring 49 × 63.5 × 22 mm, the smartwatch features a 2.06-inch AMOLED display based on the CO5300 OSPI panel with a resolution of 410 × 502 pixels, support for 16.7 million colors, and capacitive touch input managed by the CST9217 controller.

For geolocation, the T-Watch Ultra includes the u-blox MIA-M10Q GNSS module, which supports concurrent reception of GPS, Galileo, GLONASS, and BeiDou signals. It delivers fast acquisition and high sensitivity in a compact footprint, consuming just 25 mW in tracking mode. It also offers velocity accuracy of 0.05 m/s and dynamic heading accuracy of 0.3 degrees, which can be useful in wearable applications.

T-Watch Ultra Front & Back View
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The watch also integrates the Semtech SX1262 LoRa transceiver, which supports both 868 MHz and 915 MHz ISM bands used in Europe and North America for low-power, long-range communication.

A Bosch BHI260AP smart sensor provides intelligent motion tracking by combining a 6-axis IMU with a programmable processing unit for fitness recognition, dead reckoning, and orientation detection. According to the datasheet, the AI engine enables on-device learning for personalized motion analysis while minimizing power usage.

T-Watch Ultra Peripherals
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Other components include the DRV2605 haptic driver for vibration feedback, the MAX98357A amplifier for audio output, an onboard microphone, an ST25R3916 NFC module, and a PCF85063A real-time clock. Power is supplied by a 1100 mAh lithium battery managed by the AXP2101 power management unit, with a USB Type-C port used for both charging and firmware uploading.

As with other LILYGO products, development environments include Arduino IDE, ESP-IDF, VS Code, and MicroPython. The GitHub repository for the T-Watch Ultra includes initial documentation at the time of publication.

Further Information

The T-Watch Ultra is priced at $78.32 but is currently not in stock. Refer to the official product page for availability updates.