diff --git a/packages/frontend/assets/room/objects/tabletop-digital-clock/tabletop-digital-clock.blend b/packages/frontend/assets/room/objects/tabletop-digital-clock/tabletop-digital-clock.blend
new file mode 100644
index 0000000000..4a9c65f58e
Binary files /dev/null and b/packages/frontend/assets/room/objects/tabletop-digital-clock/tabletop-digital-clock.blend differ
diff --git a/packages/frontend/assets/room/objects/tabletop-digital-clock/tabletop-digital-clock.glb b/packages/frontend/assets/room/objects/tabletop-digital-clock/tabletop-digital-clock.glb
new file mode 100644
index 0000000000..8c5502e67e
Binary files /dev/null and b/packages/frontend/assets/room/objects/tabletop-digital-clock/tabletop-digital-clock.glb differ
diff --git a/packages/frontend/src/pages/room.vue b/packages/frontend/src/pages/room.vue
index 13520eda9d..6dea979c7f 100644
--- a/packages/frontend/src/pages/room.vue
+++ b/packages/frontend/src/pages/room.vue
@@ -211,6 +211,12 @@ onMounted(() => {
 			position: [-55, 90, 175],
 			rotation: [0, 0, 0],
 			options: {},
+		}, {
+			id: 'f22',
+			type: 'tabletopDigitalClock',
+			position: [-35, 90, 175],
+			rotation: [0, Math.PI, 0],
+			options: {},
 		}, {
 			id: 'f3',
 			type: 'snakeplant',
diff --git a/packages/frontend/src/utility/room/object-defs.ts b/packages/frontend/src/utility/room/object-defs.ts
index d641bcea9b..bdc6910be8 100644
--- a/packages/frontend/src/utility/room/object-defs.ts
+++ b/packages/frontend/src/utility/room/object-defs.ts
@@ -33,6 +33,7 @@ import { powerStrip } from './objects/powerStrip.js';
 import { roundRug } from './objects/roundRug.js';
 import { snakeplant } from './objects/snakeplant.js';
 import { steelRack } from './objects/steelRack.js';
+import { tabletopDigitalClock } from './objects/tabletopDigitalClock.js';
 import { tv } from './objects/tv.js';
 import { wallClock } from './objects/wallClock.js';
 import { woodSoundAbsorbingPanel } from './objects/woodSoundAbsorbingPanel.js';
@@ -68,6 +69,7 @@ export const OBJECT_DEFS = [
 	roundRug,
 	snakeplant,
 	steelRack,
+	tabletopDigitalClock,
 	tv,
 	wallClock,
 	woodSoundAbsorbingPanel,
diff --git a/packages/frontend/src/utility/room/objects/tabletopDigitalClock.ts b/packages/frontend/src/utility/room/objects/tabletopDigitalClock.ts
new file mode 100644
index 0000000000..de69f545f2
--- /dev/null
+++ b/packages/frontend/src/utility/room/objects/tabletopDigitalClock.ts
@@ -0,0 +1,59 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as BABYLON from '@babylonjs/core';
+import { defineObject } from '../engine.js';
+import { get7segMeshesOfCurrentTime, yuge } from '../utility.js';
+
+export const tabletopDigitalClock = defineObject({
+	id: 'tabletopDigitalClock',
+	defaultOptions: {},
+	placement: 'top',
+	createInstance: ({ room, root }) => {
+		return {
+			onInited: () => {
+				room.intervalIds.push(window.setInterval(() => {
+					const meshes = {
+						'1a': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_1A__')),
+						'1b': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_1B__')),
+						'1c': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_1C__')),
+						'1d': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_1D__')),
+						'1e': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_1E__')),
+						'1f': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_1F__')),
+						'1g': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_1G__')),
+						'2a': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_2A__')),
+						'2b': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_2B__')),
+						'2c': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_2C__')),
+						'2d': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_2D__')),
+						'2e': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_2E__')),
+						'2f': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_2F__')),
+						'2g': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_2G__')),
+						'3a': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_3A__')),
+						'3b': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_3B__')),
+						'3c': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_3C__')),
+						'3d': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_3D__')),
+						'3e': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_3E__')),
+						'3f': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_3F__')),
+						'3g': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_3G__')),
+						'4a': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_4A__')),
+						'4b': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_4B__')),
+						'4c': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_4C__')),
+						'4d': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_4D__')),
+						'4e': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_4E__')),
+						'4f': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_4F__')),
+						'4g': root.getChildMeshes().find(m => m.name.includes('__TIME_7SEG_4G__')),
+					};
+
+					const onMeshes = get7segMeshesOfCurrentTime(meshes);
+
+					for (const mesh of Object.values(meshes)) {
+						mesh.isVisible = onMeshes.includes(mesh);
+					}
+				}, 1000));
+			},
+			interactions: {},
+		};
+	},
+});
diff --git a/packages/frontend/src/utility/room/utility.ts b/packages/frontend/src/utility/room/utility.ts
index d60f118a60..0d45e95258 100644
--- a/packages/frontend/src/utility/room/utility.ts
+++ b/packages/frontend/src/utility/room/utility.ts
@@ -148,3 +148,68 @@ export class HorizontalCameraKeyboardMoveInput extends BABYLON.BaseCameraPointer
 		return 'horizontalkeyboard';
 	}
 }
+
+const nanasegNumberMap = [
+	['a', 'b', 'c', 'd', 'e', 'f'], // 0
+	['b', 'c'], // 1
+	['a', 'b', 'd', 'e', 'g'], // 2
+	['a', 'b', 'c', 'd', 'g'], // 3
+	['b', 'c', 'f', 'g'], // 4
+	['a', 'c', 'd', 'f', 'g'], // 5
+	['a', 'c', 'd', 'e', 'f', 'g'], // 6
+	['a', 'b', 'c'], // 7
+	['a', 'b', 'c', 'd', 'e', 'f', 'g'], // 8
+	['a', 'b', 'c', 'd', 'f', 'g'], // 9
+];
+
+export function get7segMeshesOfCurrentTime(meshes: {
+	'1a'?: BABYLON.AbstractMesh;
+	'1b'?: BABYLON.AbstractMesh;
+	'1c'?: BABYLON.AbstractMesh;
+	'1d'?: BABYLON.AbstractMesh;
+	'1e'?: BABYLON.AbstractMesh;
+	'1f'?: BABYLON.AbstractMesh;
+	'1g'?: BABYLON.AbstractMesh;
+	'2a'?: BABYLON.AbstractMesh;
+	'2b'?: BABYLON.AbstractMesh;
+	'2c'?: BABYLON.AbstractMesh;
+	'2d'?: BABYLON.AbstractMesh;
+	'2e'?: BABYLON.AbstractMesh;
+	'2f'?: BABYLON.AbstractMesh;
+	'2g'?: BABYLON.AbstractMesh;
+	'3a'?: BABYLON.AbstractMesh;
+	'3b'?: BABYLON.AbstractMesh;
+	'3c'?: BABYLON.AbstractMesh;
+	'3d'?: BABYLON.AbstractMesh;
+	'3e'?: BABYLON.AbstractMesh;
+	'3f'?: BABYLON.AbstractMesh;
+	'3g'?: BABYLON.AbstractMesh;
+	'4a'?: BABYLON.AbstractMesh;
+	'4b'?: BABYLON.AbstractMesh;
+	'4c'?: BABYLON.AbstractMesh;
+	'4d'?: BABYLON.AbstractMesh;
+	'4e'?: BABYLON.AbstractMesh;
+	'4f'?: BABYLON.AbstractMesh;
+	'4g'?: BABYLON.AbstractMesh;
+}) {
+	const now = new Date();
+	const h = now.getHours();
+	const m = now.getMinutes();
+
+	const chars = [Math.floor(h / 10), h % 10, Math.floor(m / 10), m % 10];
+
+	const result: BABYLON.AbstractMesh[] = [];
+
+	for (let i = 0; i < chars.length; i++) {
+		const char = chars[i];
+		const segs = nanasegNumberMap[char];
+		for (const seg of segs) {
+			const mesh = meshes[`${i + 1}${seg}`];
+			if (mesh) {
+				result.push(mesh);
+			}
+		}
+	}
+
+	return result;
+}