diff --git a/docs/en/app/bala.md b/docs/en/app/bala.md
index cabc5270..c0279bfa 100644
--- a/docs/en/app/bala.md
+++ b/docs/en/app/bala.md
@@ -60,7 +60,7 @@ Weight | 56g
 
 <iframe width="560" height="315" src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/video/Blog/Twitch201811/Iphone%20Controlled%20M5Bala%20.mp4" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
-**BALA 的演示 - 巡线**
+**BALA Case - Line tracer**
 
 <iframe width="560" height="315" src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/video/Blog/Twitch201901/M5BALA.mp4" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
diff --git a/docs/en/module/sim800.md b/docs/en/module/sim800.md
index e80ee263..8b830968 100644
--- a/docs/en/module/sim800.md
+++ b/docs/en/module/sim800.md
@@ -4,7 +4,7 @@
 
 ***
 
-:memo:**[Description](#Description)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:electric_plug:**[Schematic](#Schematic)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-In-Stock-GSM-Module-SIM800L-Stackable-IoT-Development-Board-for-Arduino-ESP32-with-MIC/3226069_32843211923.html?spm=2114.12010615.8148356.20.25e96be7xE1y22.html)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:clapper:**[相关视频](#相关视频)**
+:memo:**[Description](#Description)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:electric_plug:**[Schematic](#Schematic)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-In-Stock-GSM-Module-SIM800L-Stackable-IoT-Development-Board-for-Arduino-ESP32-with-MIC/3226069_32843211923.html?spm=2114.12010615.8148356.20.25e96be7xE1y22.html)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:clapper:**[Related Video](#Related-Video)**
 
 ## Description
 
@@ -80,8 +80,8 @@ Serial2.print("AT+TEST=TXLRPKT,"00 00 01 00 00 AF 80 07 02 00 00 39"");
 
 <img src="assets/img/product_pics/module/sim800_sch.png">
 
-## 相关视频
+## Related Video
 
-**SIM800L 的演示 - 拔打电话**
+**SIM800L Case - Phone calling**
 
 <iframe width="560" height="315" src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/video/Blog/Twitch201901/M5Stack%20Phone.mp4" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
diff --git a/docs/ja/module/sim800.md b/docs/ja/module/sim800.md
index ab34bdbc..3764a67f 100644
--- a/docs/ja/module/sim800.md
+++ b/docs/ja/module/sim800.md
@@ -4,7 +4,7 @@
 
 ***
 
-:memo:**[概要](#概要)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:electric_plug:**[回路図](#回路図)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[購入リンク](https://www.aliexpress.com/store/product/M5Stack-Official-In-Stock-GSM-Module-SIM800L-Stackable-IoT-Development-Board-for-Arduino-ESP32-with-MIC/3226069_32843211923.html?spm=2114.12010615.8148356.20.25e96be7xE1y22.html)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:clapper:**[相关视频](#相关视频)**
+:memo:**[概要](#概要)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:electric_plug:**[回路図](#回路図)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[購入リンク](https://www.aliexpress.com/store/product/M5Stack-Official-In-Stock-GSM-Module-SIM800L-Stackable-IoT-Development-Board-for-Arduino-ESP32-with-MIC/3226069_32843211923.html?spm=2114.12010615.8148356.20.25e96be7xE1y22.html)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:clapper:**[関連動画](#関連動画)**
 
 <!-- :memo:**[概要](#概要)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:octocat:**[サンプルコード](#サンプルコード)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:electric_plug:**[回路図](#回路図)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[購入リンク](https://www.aliexpress.com/store/product/M5Stack-Official-In-Stock-GSM-Module-SIM800L-Stackable-IoT-Development-Board-for-Arduino-ESP32-with-MIC/3226069_32843211923.html?spm=2114.12010615.8148356.20.25e96be7xE1y22.html)** -->
 
@@ -67,8 +67,8 @@ M5Stackシリーズのコアを使用し、Blockly、Arduino、MicroPythonでプ
 
 <img src="assets/img/product_pics/module/sim800_sch.png">
 
-## 相关视频
+## 関連動画
 
-**SIM800L 的演示 - 拔打电话**
+**SIM800L デモ - 電話をかける**
 
 <iframe width="560" height="315" src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/video/Blog/Twitch201901/M5Stack%20Phone.mp4" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>