CHOOSE THE COLORS
UPLOAD YOUR OWN FACE
Already created a design in DaFit Canvas? Open your project ZIP, preview it and send it straight to your watch.
Your ZIP stays in your browser.
Ready when you are.
When sending from a computer, turn off Bluetooth on the phone connected to the watch through Da Fit application. Keep the watch nearby.
Connection details & diagnostic
USING THE DA FIT CATALOGUE
Our development reference.
This configuration guided development of the converter and protocol. Compatibility can vary across Da Fit / MoYoung devices and firmware versions.
- Reported manufacturer
- MOYOUNG-V2
- Software revision
- MOY-7B72-2.1.0
- Device revision (GATT 0x2A26)
- JLQFNHTJ1.1
- Round display
- 240 × 240 px
Proprietary firmware. The OS/RTOS name and processor have not been confirmed for this reference unit.
Technical profile, protocol notes & references
These notes describe this project’s implementation and observations from the reference device. They are not a complete official protocol specification.
The browser uploader was tested with simulated Bluetooth. A physical-watch test is still required; a valid CRC does not prove correct rendering.
| Protocol / capability | Reference value |
|---|---|
| Transport | Bluetooth Low Energy · GATT · service 0xFEEA |
| Control write | 0xFEE2 · write without response |
| Notifications | 0xFEE3 · notify |
| Watch-face data write | 0xFEE6 · write without response |
| Catalogue profile | tpls 76 · API 53 · functions 3 |
| Output format | FaceN/Jieli · API 35 · RGB565 / alpha + RLE |
| Transfer commands | 0xBA/1 (block size) · 0x74 (upload / CRC) |
| Face registration / selection | 0xB4/0x11 · ID 29561 (u32 little-endian) |
| CRC-16 | poly 0x1021 · init 0xFEEA · refin/refout false · xorout 0x0000 |
Development references
- MoYoung BLE SDK ↗
MoYoung SDK: watch-face capabilities, uploads and Jieli face-ID registration.
- DaFit Canvas ↗
Project structure, image formats and editor integration.
- Reverse Engineering MoYoung Watch Faces ↗
The author’s technical account of MoYoung watch-face reverse engineering.
- dawft ↗ dawfu ↗
Original community tools for unpacking/rebuilding and BLE uploading; their default assumptions do not fully cover this profile.
- Web Bluetooth · Chrome Developers ↗
Browser requirements, permissions and GATT communication.
- DecompressionStream · MDN ↗
Native browser decompression used to read project ZIP files locally.
- extrathundertool
The catalogue and editor open on the original DaFit Canvas website. These references describe this application’s converter and protocol. This package does not contain an editor copy.