LILYGO T-Watch Ultra
Premium ESP32-S3 smartwatch development platform with 2.06" AMOLED touchscreen, LoRa SX1262, GNSS, NFC, MAX98357A audio, DRV2605 haptic, AXP2101 PMIC, and 1100mAh battery.
$78.32
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Specifications
Certifications
Components
Xtensa LX7 dual-core at 240MHz with 16MB flash, 8MB PSRAM, WiFi, and BLE 5.0.
High-resolution AMOLED display driver supporting 410×502 pixels with 16.7M colors.
Capacitive touch controller with I2C interface supporting up to 5 touch points.
Long-range LoRa transceiver covering 150–960 MHz with +22 dBm output power.
Filterless 3.2W Class D amplifier with I2S interface for speaker audio output.
I2C haptic motor driver with 123 built-in waveforms for ERM and LRA actuators.
Advanced PMIC with multi-rail LDO outputs, LiPo charging, fuel gauge, and power-off control.
Bus Interfaces
GPIO Map
Overview
The LILYGO T-Watch Ultra is the most feature-rich smartwatch development platform from LILYGO, combining the ESP32-S3 with an impressive array of integrated peripherals into a complete wearable computing system.
The centerpiece is a 2.06-inch AMOLED display (CO5300 driver, 410×502, 16.7M colors) with capacitive multi-touch (CST9217). Beyond standard smartwatch features, the Ultra integrates a SX1262 LoRa transceiver for long-range off-grid communication, GNSS for location tracking, NFC for contactless interactions, a MAX98357A Class-D amplifier for audio output, a DRV2605 haptic driver for tactile feedback, and a microphone for voice input.
Power management is handled by the AXP2101 PMIC, which manages the 1100mAh LiPo battery with fuel gauging and multi-channel power rails. The built-in microSD card slot enables data logging and offline audio playback. This comprehensive feature set makes it ideal for search-and-rescue trackers, off-grid mesh network nodes, and custom smartwatch firmware development.
Use Cases
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