Skip to product information
1 of 7

Ship to Worldwide

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

⚠️If you need technical support, you can get a quicker response on our GitHub (the tech team will check it directly). Please provide your Tax/Personal ID (if available), this will expedite the shipment of your order.

Instructions Before Order

If you order the wrong product or want to add another or change your shipping address, please re-edit the correct information and place a new order, then contact us to cancel the incorrect order.

If you have a tax ID or personal ID please provide as much as possible, otherwise, if your country requires this information we will block your order and contact you via email, which will slow down the shipment.

We strongly recommend choosing DHL or FedEx if your order is over $200.

Generally, except for DHL or FedEx, we will automatically split orders over $150-200 into two packages due to customs clearance, loss prevention issues, etc.

For more please check here

Shipping & Delivery

Methods & Delivery Time

  1. Standard Express: 25-30 Days
  2. EUB: 25-30 Days
  3. YunTu Express : 10-20 Days
    (Company name can't be used consignee)
  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.

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.]

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 the below link to find more details.


T-WATCH-2020 document

Micropython ESP32 Firmware Download Address

Tip: You need to turn on the switch when you turn it on for the first time, and it is recommended to turn off the battery switch when it is not used for a long time.

Color Contrast
Pin Diagram

  • 1 X T-Watch
  • 1 X Cable

View full details

Customer Reviews

Based on 7 reviews
Jason Agne
good watch

I do wish there was a little more information on the code for it but it isn't really information about the watch I am after so much as information on signals I'd like to replicate with it.

Barry Lintz
Great Dev kit.

Works great as a Dev kit. Not really fit as a daily use watch. There are a lot of glitches and crashes during the day. Also, Meshtastic firmware is not ready for use on this device due to power usage and crashes.

Behnam Saeedi
It works!

Don't forget to flick the switch under the battery to on! I was very frustrated with it not working for a few days and then during one of the trouble shootings with a multimeter I noticed the batter is doing fine and the switch is the only place that has power. flicking it to on made the watch start.

Note that this is not a smart watch meant for consumers. this is a smartwatch meant for creators and tinkerers. Don't expect it to be perfect user experience, expect it to be a perfect development platform and with that mindset, looks like they have delivered.

J Hoeks
Small wristband

Wristband is small I can barely wear. Wish this was USB C

Get product

Fantastic to have access to a low power watch… for LORA testing.