{
  "added_at": "2026-11-08",
  "category": "reconstruction-cases",
  "class": "hardware",
  "description_en": "OpenWatch implements an Android companion for LJ736/LY736D-based smartwatches using BLE commands reconstructed from the LaxaFit Pro APK and captured traffic. It handles pairing, notifications and clock synchronization locally, and can buzz the watch to help locate it. Protocol notes describe packet framing and watch-face transfer; the author reports that custom watch faces still display as blank black screens.",
  "description_zh": "OpenWatch 是 LJ736/LY736D 系列手表的 Android 配套应用，依据 LaxaFit Pro APK 的反编译结果和捕获的 BLE 流量实现通信。它在本地处理配对、通知转发和时钟同步，还能触发手表振动以便寻找。协议笔记记录了封包结构与表盘传输；作者报告自定义表盘目前仍显示黑屏。",
  "entry_url": "https://awesomerea.org/resources/openwatch-ly736d-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/openwatch-ly736d-case/",
  "evidence_class": 2,
  "evidence_status": "observed",
  "evidence_url": "https://github.com/mehranshahmiri/openwatch-LY736D/blob/9a79b6ecac73ebb31739d3fb80e8a8e932e19f5a/README.md",
  "group": "cases",
  "id": "openwatch-ly736d-case",
  "json_url": "https://awesomerea.org/resources/openwatch-ly736d-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/openwatch-ly736d-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/openwatch-ly736d-case/index.md",
  "name": "OpenWatch: reconstructing the LJ736/LY736D smartwatch BLE client",
  "name_zh": "OpenWatch：重建 LJ736/LY736D 智能手表 BLE 客户端",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "scope",
    "prerequisites",
    "license"
  ],
  "requirements": [
    "Android Studio, JDK 17 and Gradle 8; minimum Android SDK level 26.",
    "A compatible LJ736/LY736D watch; hardware testing covers one LJ736 board with a 240×296 display.",
    "Custom watch-face builds require the user's own LaxaFit Pro font asset.",
    "MIT License."
  ],
  "requirements_zh": [
    "构建需要 Android Studio、JDK 17 和 Gradle 8；最低 Android SDK 级别为 26。",
    "需要兼容的 LJ736/LY736D 手表；硬件测试仅覆盖一块 240×296 屏幕的 LJ736 主板。",
    "构建自定义表盘功能需要用户自行取得 LaxaFit Pro 字体资源。",
    "采用 MIT 许可证。"
  ],
  "scope": "unknown",
  "targets": [
    "protocol"
  ],
  "url": "https://github.com/mehranshahmiri/openwatch-LY736D",
  "verification": "source-reviewed",
  "verified_at": "2026-11-06"
}