LILYGO’s T-Watch Ultra is an ESP32-S3-based smartwatch development platform with an IP65 rating, enhancing the previous T-Watch-S3 Plus with a 2.01-inch AMOLED display, 1,100mAh battery, and greater water and dust resistance. It includes a u-blox MIA-M10Q GNSS module, SX1262 LoRa transceiver, Bosch BHI260AP sensor, RTC chip, NFC, microphone, haptic driver, microSD slot, and USB-C port. The watch is suitable for Meshtastic nodes, GPS tracking, IoT interfaces, edge AI, and custom firmware development.
Specifications:
– SoC: ESP32-S3R8 (dual-core 240 MHz, 512KB SRAM, 8MB PSRAM)
– Storage: 16MB flash, microSD slot
– Connectivity: WiFi 4, Bluetooth 5.0 LE, GNSS (u-blox), LoRa (SX1262), NFC
– Display: 2.01-inch AMOLED, 410 x 502 resolution
– Audio: Microphone, MAX98357A amplifier
– Power: 1,100mAh battery, AXP2101 PMU
– IP65 rating
– Dimensions: 63.5 x 49 x 22 mm
Software support includes Arduino IDE, PlatformIO, ESP-IDF, and MicroPython, with resources on GitHub for peripherals. The watch retails around $95 on AliExpress, $78.32 on LILYGO’s store, with LoRa bands like 433 MHz, 868 MHz, 915 MHz, 920 MHz, and 2.4 GHz (SX1280).