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T-Watch S3

T-Watch S3

Open-source smartwatch with LoRa and ESP32 S3

Regular price $42.98 USD
Regular price Sale price $42.98 USD
Sale Sold out

⚠️Please note that all policy page on site only applies to items purchased from our store:

Relevant technical or usage issues can be also discussed in our GitHub or Community.

About Tax

At present, the price of the platform does not include any tax.
European customers should pay attention to the tax problem after the package reaches the local country, which needs to be borne/handled by the customer, the local policy shall prevail

[orders over 150 euros may generate tax (Amount for reference only), for orders over this amount, we will not inform the customer separately, so please pay attention to it by yourself.]

Commended User

People with programming foundation[engineers / students / makers, etc..]

Shipping & Delivery

Please read the following rules carefully before submitting your order, otherwise, we can't process your order.

  1. For international orders, please make sure the language of the delivery address is in English
  2. For domestic orders (Mainland China), please make sure the language of the delivery address is Chinese.
  3. For Hong Kong, Macau, and Taiwan orders, please provide your tax ID number, or the corresponding ID card number, and the corresponding GUI Number if the recipient is a company name.


Methods & Delivery Time

  1. Standard Express: 25-30 Days
  2. EUB: 25-30 Days
  3. YunTu Express: 10-20 Days
  4. DHL: 10-17 Days
  5. FedEx: 10-17 Days
  6. YanWen: 20-35 Days

Please note that all delivery times are estimated for reference only.

During ship, maybe some methods of transport do not update the logistic track until the parcel reaches the destination country.

If you do not see one of the above shipping methods when checking out, it may be because your country does not support that shipping method, please select one of the available channels already listed or contact us for help.

Please make sure your address is fully filled in (including province and continent, which will affect the shipping time of your order)

For more details please check our shipping policy.

T-Watch S3 meets the needs of developers who want to experiment with LoRa and ESP32 S3 technology in wearable devices, highly customizable and usable in a variety of applications.


Platform Arduino-IDE, ESP-IDF, VS Code, Micropython

Wi-Fi: 802.11 b/g/n

Bluetooth: BLE V5.0

Onboard Functions RTC, Microphone, MAX98357A, Power Detection, BMA423 3-axis acceleration sensor
DRV2605 Haptic Driver Motor for ERM and LRA
AXP2101 Highly Integrated Power Management Unit
 SX1262 Low Power LoRa Transceiver
Support Baud: 433Mhz, 868Mhz, 915Mhz

Sample Code For Reference [Github]

If you need technical support please check below link to find more details.


T-WATCH-2020 document

Micropython ESP32 Firmware Download Address

Color Contrast
Pin Diagram

  • 1 X T-Watch
  • 1 X Cable

View full details

Customer Reviews

Based on 3 reviews
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Fantastic to have access to a low power watch… for LORA testing.

Joseph Giordano
Not for me but someone else

I bought this not so much for myself but for someone else. I'm sure this is something he's really going to enjoy once he gets his hands on it. I don't have enough experience in programming like he does and I think this is going to give him something that he can play with and show off to his buddies and co-workers.

A great improvement over T-Watch 2020

The T-Watch 2020 serie was great, but it had its issues, like slow display, low autonomy...
This version fixes all those issues: the display is (relatively) blazing fast, the battery is bigger, and USB OTG support is added, I also enjoy the addition of a lora chip (though i'd like to have both LoRa and GPS).
The only downgrade is the new AXP2101 power management cannot measure current or power draw, which was very useful.