diff --git a/firmware/cyd/media/preview.html b/firmware/cyd/media/preview.html
new file mode 100644
index 0000000..44b8d21
--- /dev/null
+++ b/firmware/cyd/media/preview.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8" />
+<title>HW-069</title>
+<style>
+
+  *{box-sizing:border-box;margin:0;padding:0}
+  html,body{width:320px;height:240px;overflow:hidden;background:#000;margin:0}
+  .bezel{width:320px;height:240px;background:#1a1408}
+  .screen{width:320px;height:240px;background:#0A1016;color:#EAF0F6;font:12px/1.2 system-ui,sans-serif;position:relative;overflow:hidden}
+  .muted{color:#7A8B9C}.ok{color:#3DDC97}.bad{color:#E85D4C}.acc{color:#4FC3F7}.amber{color:#FFB74D}
+  .btn{border:0;border-radius:8px;background:#243140;color:#EAF0F6;font-weight:600}
+  .btn.acc{background:#1A4A6E}.btn.on{background:#1B5E4A}.btn.warn{background:#6B3A1E}
+
+
+  .t{position:absolute;left:0;right:0;top:4px;text-align:center;font-size:24px;font-weight:700}
+  .pin{position:absolute;left:0;right:0;top:36px;text-align:center;font-size:11px}
+  .val{position:absolute;left:0;right:0;top:58px;text-align:center;font-size:40px;font-weight:800;color:#FFB74D;letter-spacing:4px}
+  .row{position:absolute;left:12px;right:12px;top:112px;display:flex;gap:6px}
+  .row .btn{flex:1;height:32px}
+  .br{position:absolute;left:16px;top:152px}
+  .slider{position:absolute;left:110px;right:16px;top:156px;height:12px;border-radius:4px;background:#243140;overflow:hidden}
+  .slider>i{display:block;height:100%;width:60%;background:#FFB74D}
+  .twin{position:absolute;left:12px;right:12px;bottom:12px;display:flex;gap:8px}
+  .twin .btn{flex:1;height:40px}
+
+</style>
+</head>
+<body>
+<div class="bezel"><div class="screen" id="s">
+
+  <div class="t">HW-069</div>
+  <div class="pin muted">v1.1  CLK22  DIO27  TM1637</div>
+  <div class="val">12:34</div>
+  <div class="row">
+    <button class="btn" type="button">-100</button>
+    <button class="btn" type="button">-1</button>
+    <button class="btn" type="button">+1</button>
+    <button class="btn" type="button">+100</button>
+  </div>
+  <div class="br muted">Brightness 60%</div>
+  <div class="slider"><i></i></div>
+  <div class="twin">
+    <button class="btn" type="button">Colon ON</button>
+    <button class="btn on" type="button">Display ON</button>
+  </div>
+
+</div></div>
+</body>
+</html>
diff --git a/firmware/cyd/meta.json b/firmware/cyd/meta.json
index f78fd1c..4d31b9d 100644
--- a/firmware/cyd/meta.json
+++ b/firmware/cyd/meta.json
@@ -3,5 +3,15 @@
   "name": "CYD HW-069 Digit Display",
   "summary": "HW-069 v1.1 TM1637 4-digit: CLK GPIO22, DIO GPIO27 — value / brightness / colon / on-off",
   "description": "SoftSPI touch + LVGL. HW-069 4-digit 7-segment (TM1637) on CLK=22 DIO=27.",
-  "tags": ["hw069", "tm1637", "digit", "display", "touch", "lvgl"]
+  "tags": [
+    "hw069",
+    "tm1637",
+    "digit",
+    "display",
+    "touch",
+    "lvgl"
+  ],
+  "media": {
+    "preview": "media/preview.html"
+  }
 }