diff --git a/app/release/app-release-4.1.3e.apk b/app/release/app-release-4.1.3f.apk
similarity index 68%
rename from app/release/app-release-4.1.3e.apk
rename to app/release/app-release-4.1.3f.apk
index 7b534b0..e5ac449 100644
Binary files a/app/release/app-release-4.1.3e.apk and b/app/release/app-release-4.1.3f.apk differ
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 4f48f1a..697668d 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -3,7 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="uk.org.openseizuredetector"
     android:versionCode="115"
-    android:versionName="4.1.3e">
+    android:versionName="4.1.3f">
     <!-- android:allowBackup="false" -->
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
diff --git a/app/src/main/java/uk/org/openseizuredetector/MainActivity.java b/app/src/main/java/uk/org/openseizuredetector/MainActivity.java
index 66d4cf7..fbc691a 100644
--- a/app/src/main/java/uk/org/openseizuredetector/MainActivity.java
+++ b/app/src/main/java/uk/org/openseizuredetector/MainActivity.java
@@ -862,7 +862,7 @@ public class MainActivity extends AppCompatActivity {
                         tv.setTextColor(warnTextColour);
 
                         tv = (TextView) findViewById(R.id.pebbleTv);
-                        tv.setText(getString(R.string.HR_Equals) + " --- bpm\nO2 Sat = --- %");
+                        tv.setText(getString(R.string.HR_Equals) + " --- bpm\n"+getString(R.string.o2_sat)+" = --- %");
                         tv.setBackgroundColor(warnColour);
                         tv.setTextColor(warnTextColour);
 
diff --git a/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java b/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java
index ec18a8f..c1b6987 100644
--- a/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java
+++ b/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java
@@ -552,7 +552,7 @@ public class StartupActivity extends AppCompatActivity {
                             //MainActivity.this.finish();
                         }
                     })
-                    .setPositiveButton("Privacy Policy", new DialogInterface.OnClickListener() {
+                    .setPositiveButton(R.string.privacy_policy, new DialogInterface.OnClickListener() {
                         public void onClick(DialogInterface dialog, int id) {
                             dialog.cancel();
                             mDialogDisplayed = false;
@@ -564,7 +564,7 @@ public class StartupActivity extends AppCompatActivity {
                             mDialogDisplayed = false;
                         }
                     })
-                    .setNegativeButton("Data Sharing", new DialogInterface.OnClickListener() {
+                    .setNegativeButton(R.string.data_sharing, new DialogInterface.OnClickListener() {
                         public void onClick(DialogInterface dialog, int id) {
                             dialog.cancel();
                             mDialogDisplayed = false;
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index c7c94dc..ed6d34c 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -4,7 +4,7 @@
     <string name="email_welcome_note">Drogi OpenSeizureDetector,\n\nAplikacja właśnie uległa awarii. Sprawdź dziennik błędów, aby uzyskać więcej informacji.\n\n\n</string>
     <string name="copyright_info">OpenSeizureDetector (Używa UCE Handler\nCopyright © 2018 Rohit Sahebrao Surwase.)</string>
     <string name="okBtnTxt">OK</string>
-	<string name="closeBtnTxt">Close</string>
+	<string name="closeBtnTxt">ZAMKNIJ</string>
     <string name="UpdateDialogTitleTxt">Dziękujemy za zaktualizowanie OpenSeizureDetector</string>
     <string name="FirstRunDlgTitle">Witaj w OpenSeizureDetector</string>
     <string name="SmsPermissionWarning">Problem z uprawnieniami SMS</string>
@@ -429,4 +429,5 @@
     <string name="data_sharing">Udostępnianie danych</string>
     <string name="prevent_bat_opt_summary">Nie wyświetlaj okna dialogowego optymalizacji baterii podczas uruchamiania (niektóre telefony pracujące na starszych wersjach Androida zgłaszają że OpenSeizureDetector jest zoptymalizowany nawet jeśli tak nie jest więc okno dialogowe jest uciążliwe)</string>
     <string name="prevent_bat_opt_title">Wyłącz okno dialogowe ostrzeżenia o optymalizacji baterii</string>
+    <string name="o2_sat">SpO2</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 564f041..43d6edc 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -470,4 +470,5 @@
     <string name="data_sharing">Data Sharing</string>
     <string name="prevent_bat_opt_summary">Do not display the battery optimisation dialog on start-up (some phones report that OpenSeizureDetector is optimised, even if it is not, so the dialog is a nuissance)</string>
     <string name="prevent_bat_opt_title">Inhibit Battery Optimisation Warning Dialog</string>
+    <string name="o2_sat">O2 Sat</string>
 </resources>