{"id":389081,"date":"2026-04-20T17:56:15","date_gmt":"2026-04-20T17:56:15","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/389081\/"},"modified":"2026-04-20T17:56:15","modified_gmt":"2026-04-20T17:56:15","slug":"lilygo-t-watch-ultra-an-ip65-rated-esp32-s3-smartwatch-with-2-01-inch-amoled-lora-and-gnss","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/389081\/","title":{"rendered":"LILYGO T-Watch Ultra – An IP65-rated ESP32-S3 smartwatch with 2.01-inch AMOLED, LoRa, and GNSS"},"content":{"rendered":"

LILYGO\u2019s T-Watch Ultra is an ESP32-S3-based smartwatch development platform that appears to be an upgrade over the previous T-Watch-S3 Plus (1.3-inch display and a 940mAh battery)<\/a>, with a larger 2.01-inch AMOLED touch display, a higher-capacity 1,100mAh battery, and an IP65 waterproof and dustproof rating.<\/p>\n

The device integrates a u-blox MIA-M10Q GNSS module for positioning, a SX1262 LoRa transceiver for long-range communication, and a Bosch BHI260AP smart sensor for motion-based AI applications. Additionally, it features an RTC chip, NFC, a built-in microphone, a haptic driver, a microSD card slot, and a USB Type-C port for programming and charging. The watch targets applications such as Meshtastic nodes, GPS tracking, wearable IoT interfaces, edge AI sensing, and custom smartwatch firmware development.<\/p>\n

\"T<\/a><\/p>\n

LILYGO T-Watch Ultra specifications:<\/p>\n

SoC \u2013 Espressif\u00a0ESP32-S3R8<\/a><\/p>\n

CPU \u2013 Dual-core Tensilica LX7 microcontroller up to 240 MHz with vector instructions for AI acceleration
\nMemory \u2013 512KB SRAM, 8MB PSRAM
\nWireless \u2013 WiFi 4 and Bluetooth 5.0 LE + Mesh connectivity<\/p>\n

Storage<\/p>\n

16MB QSPI flash
\nMicroSD card slot<\/p>\n

Display \u2013 2.01-inch AMOLED display with 410 x 502 resolution, 16.7M colors, and capacitive touch (CST9217)
\nAudio \u2013 Built-in microphone, MAX98357A I2S Class-D amplifier
\nWireless Connectivity<\/p>\n

2.4 GHz WiFi 4 (802.11 b\/g\/n) and Bluetooth 5.0 LE (from ESP32-S3 itself)
\nGNSS \u2013 u-blox MIA-M10Q module
\nLoRa \u2013 Semtech SX1262 LoRa transceiver (868MHz, 915MHz, or 920MHz options available)
\nNFC \u2013 STMicroelectronics ST25R3916<\/p>\n

USB \u2013 USB Type-C port for charging and programming
\nSensors \u2013 Bosch BHI260AP AI smart sensor (IMU)
\nMisc<\/p>\n

PCF85063A RTC (Real-Time Clock)
\nDRV2605 haptic driver motor (ERM and LRA)
\nHardware Reset and Boot buttons<\/p>\n

Power<\/p>\n

1,100mAh (4.07 Wh) battery
\nAXP2101 highly integrated Power Management Unit (PMU)<\/p>\n

Dimensions \u2013 63.5 x 49 x 22 mm
\nIngress Protection \u2013 IP65 (waterproof and dustproof)<\/p>\n

\"ESP32-S3<\/a>ESP32-S3-powered IP65-rated LILYGO T-Watch Ultra Smartwatch pinout diagram<\/p>\n

In terms of software support, the smartwatch works with the Arduino IDE, PlatformIO, the ESP-IDF framework, and MicroPython. LILYGO provides the LilyGoLib library on GitHub<\/a> with example projects (including factory test code) and drivers for peripherals such as the AMOLED display, LoRa radio, GNSS, NFC, and sensors. The company clarifies that to program the board with Arduino IDE, you will need the Arduino-ESP32 core version 3.3.0-alpha1 or newer, and board settings must be configured for the correct radio variant (e.g., SX1262). Since PlatformIO does not yet fully support the newer ESP32 Arduino core, developers need to use the separate LilyGoLib-PlatformIO repository<\/a> as a workaround.<\/p>\n

The documentation on GitHub clearly states that if the USB device keeps connecting and disconnecting, which can occur after installing third-party firmware such as Meshtastic, you may need to manually put the device into download mode before uploading new firmware.<\/p>\n

\"T-Watch<\/a>Meshtastic (beta) firmware<\/a> on T-Watch Ultra<\/p>\n

Previously, we have written about various other ESP32-based watch development platforms, including NASA Artemis Watch 2.0<\/a> (NASA-inspired wearable kit for education), Waveshare ESP32-S3 2.06-inch AMOLED touch<\/a>, and watch-like penetration testing tools, like the Deauther Watch X<\/a> and Deauther Watch V4S\u00a0<\/a>IR<\/a>, but it\u2019s harder to find a watch devkit with built-in LoRa connectivity.<\/p>\n

The LILYGO T-Watch Ultra is available on AliExpress for around $95<\/a>, with different LoRa bands including 433 MHz, 868 MHz, 915 MHz, 920 MHz, and 2.4 GHz (SX1280). It can also be purchased from the official LILYGO store for $78.32<\/a> with standard and express shipping options available, and we suspect it might eventually show up on the company\u2019s Amazon store<\/a>. Note that at the time of writing, only the 868 MHz, 915 MHz, and 920 MHz options are available on AliExpress or the LILYGO store.<\/p>\n

\"T<\/a><\/p>\n

\"Debashis<\/p>\n

Debashis Das is a technical content writer and embedded engineer with over five years of experience in the industry. With expertise in Embedded C, PCB Design, and SEO optimization, he effectively blends difficult technical topics with clear communication<\/p>\n

Support CNX Software! Donate via cryptocurrencies<\/a>, become a Patron<\/a> on Patreon, or purchase goods on Amazon<\/a> or Aliexpress<\/a>. We also use affiliate links in articles to earn commissions if you make a purchase after clicking on those links.<\/p>\n","protected":false},"excerpt":{"rendered":"LILYGO\u2019s T-Watch Ultra is an ESP32-S3-based smartwatch development platform that appears to be an upgrade over the previous…\n","protected":false},"author":2,"featured_media":389082,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[43367,119513,18617,103365,185685,356,14093,2798,119515,103366,103368,201417,111,139,68256,69,1802,145,3492,7159],"class_list":{"0":"post-389081","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-gadgets","8":"tag-amoled","9":"tag-arduino","10":"tag-bluetooth","11":"tag-development-board","12":"tag-esp32","13":"tag-gadgets","14":"tag-gps","15":"tag-iot","16":"tag-lilygo","17":"tag-lora","18":"tag-meshtastic","19":"tag-micropython","20":"tag-new-zealand","21":"tag-newzealand","22":"tag-nfc","23":"tag-nz","24":"tag-smartwatch","25":"tag-technology","26":"tag-wearables","27":"tag-wifi"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/389081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=389081"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/389081\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/389082"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=389081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=389081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=389081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}