diff --git a/app/src/main/kotlin/com/simplemobiletools/clock/activities/SettingsActivity.kt b/app/src/main/kotlin/com/simplemobiletools/clock/activities/SettingsActivity.kt
index 96b766c3..7c03c699 100644
--- a/app/src/main/kotlin/com/simplemobiletools/clock/activities/SettingsActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/clock/activities/SettingsActivity.kt
@@ -4,6 +4,7 @@ import android.os.Bundle
 import com.simplemobiletools.clock.R
 import com.simplemobiletools.clock.extensions.config
 import com.simplemobiletools.commons.extensions.beVisibleIf
+import com.simplemobiletools.commons.extensions.getAdjustedPrimaryColor
 import com.simplemobiletools.commons.extensions.updateTextColors
 import com.simplemobiletools.commons.extensions.useEnglishToggled
 import kotlinx.android.synthetic.main.activity_settings.*
@@ -22,7 +23,16 @@ class SettingsActivity : SimpleActivity() {
         setupUseEnglish()
         setupAvoidWhatsNew()
         setupPreventPhoneFromSleeping()
+        setupShowSeconds()
         updateTextColors(settings_holder)
+        setupSectionColors()
+    }
+
+    private fun setupSectionColors() {
+        val adjustedPrimaryColor = getAdjustedPrimaryColor()
+        arrayListOf(clock_tab_label).forEach {
+            it.setTextColor(adjustedPrimaryColor)
+        }
     }
 
     private fun setupCustomizeColors() {
@@ -56,4 +66,12 @@ class SettingsActivity : SimpleActivity() {
             config.preventPhoneFromSleeping = settings_prevent_phone_from_sleeping.isChecked
         }
     }
+
+    private fun setupShowSeconds() {
+        settings_show_seconds.isChecked = config.showSeconds
+        settings_show_seconds_holder.setOnClickListener {
+            settings_show_seconds.toggle()
+            config.showSeconds = settings_show_seconds.isChecked
+        }
+    }
 }
diff --git a/app/src/main/kotlin/com/simplemobiletools/clock/fragments/ClockFragment.kt b/app/src/main/kotlin/com/simplemobiletools/clock/fragments/ClockFragment.kt
index f086bc1a..3197b05a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/clock/fragments/ClockFragment.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/clock/fragments/ClockFragment.kt
@@ -4,6 +4,7 @@ import android.content.Context
 import android.os.Handler
 import android.util.AttributeSet
 import android.widget.RelativeLayout
+import com.simplemobiletools.clock.extensions.config
 import com.simplemobiletools.commons.extensions.updateTextColors
 import kotlinx.android.synthetic.main.fragment_clock.view.*
 import java.util.*
@@ -25,9 +26,17 @@ class ClockFragment(context: Context, attributeSet: AttributeSet) : RelativeLayo
     private fun updateCurrentTime() {
         val hours = (passedSeconds / 3600) % 24
         val minutes = (passedSeconds / 60) % 60
-        val seconds = passedSeconds % 60
-        val format = "%02d:%02d:%02d"
-        clock_time.text = String.format(format, hours, minutes, seconds)
+        var format = "%02d:%02d"
+
+        val formattedText = if (context.config.showSeconds) {
+            val seconds = passedSeconds % 60
+            format += ":%02d"
+            String.format(format, hours, minutes, seconds)
+        } else {
+            String.format(format, hours, minutes)
+        }
+
+        clock_time.text = formattedText
 
         updateHandler.postDelayed({
             passedSeconds++
diff --git a/app/src/main/kotlin/com/simplemobiletools/clock/helpers/Config.kt b/app/src/main/kotlin/com/simplemobiletools/clock/helpers/Config.kt
index 04b59fc1..e82b4a31 100644
--- a/app/src/main/kotlin/com/simplemobiletools/clock/helpers/Config.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/clock/helpers/Config.kt
@@ -7,4 +7,8 @@ class Config(context: Context) : BaseConfig(context) {
     companion object {
         fun newInstance(context: Context) = Config(context)
     }
+
+    var showSeconds: Boolean
+        get() = prefs.getBoolean(SHOW_SECONDS, true)
+        set(showSeconds) = prefs.edit().putBoolean(SHOW_SECONDS, showSeconds).apply()
 }
diff --git a/app/src/main/kotlin/com/simplemobiletools/clock/helpers/Constants.kt b/app/src/main/kotlin/com/simplemobiletools/clock/helpers/Constants.kt
new file mode 100644
index 00000000..136c4df3
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/clock/helpers/Constants.kt
@@ -0,0 +1,4 @@
+package com.simplemobiletools.clock.helpers
+
+// shared preferences
+const val SHOW_SECONDS = "show_seconds"
diff --git a/app/src/main/res/layout/activity_settings.xml b/app/src/main/res/layout/activity_settings.xml
index c3427eea..189c0554 100644
--- a/app/src/main/res/layout/activity_settings.xml
+++ b/app/src/main/res/layout/activity_settings.xml
@@ -101,5 +101,46 @@
                 android:text="@string/prevent_phone_from_sleeping"/>
 
         </RelativeLayout>
+
+        <View
+            android:id="@+id/clock_tab_divider"
+            android:layout_width="match_parent"
+            android:layout_height="1px"
+            android:background="@color/divider_grey"
+            android:importantForAccessibility="no"/>
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/clock_tab_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="@dimen/bigger_margin"
+            android:layout_marginStart="@dimen/bigger_margin"
+            android:layout_marginTop="@dimen/activity_margin"
+            android:text="@string/clock_tab"
+            android:textAllCaps="true"
+            android:textSize="@dimen/smaller_text_size"/>
+
+        <RelativeLayout
+            android:id="@+id/settings_show_seconds_holder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/medium_margin"
+            android:background="?attr/selectableItemBackground"
+            android:paddingBottom="@dimen/activity_margin"
+            android:paddingLeft="@dimen/normal_margin"
+            android:paddingRight="@dimen/normal_margin"
+            android:paddingTop="@dimen/activity_margin">
+
+            <com.simplemobiletools.commons.views.MySwitchCompat
+                android:id="@+id/settings_show_seconds"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@null"
+                android:clickable="false"
+                android:paddingLeft="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:text="@string/show_seconds"/>
+
+        </RelativeLayout>
     </LinearLayout>
 </ScrollView>
diff --git a/app/src/main/res/layout/fragment_clock.xml b/app/src/main/res/layout/fragment_clock.xml
index 5a4c7850..9cfcaabf 100644
--- a/app/src/main/res/layout/fragment_clock.xml
+++ b/app/src/main/res/layout/fragment_clock.xml
@@ -7,6 +7,7 @@
     android:layout_height="match_parent">
 
     <com.simplemobiletools.commons.views.MyTextView
+        android:id="@+id/clock_time"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="@dimen/big_margin"
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
new file mode 100644
index 00000000..cd9b297f
--- /dev/null
+++ b/app/src/main/res/values-sk/strings.xml
@@ -0,0 +1,15 @@
+<resources>
+    <string name="app_name">Jednoduché hodinky</string>
+    <string name="app_launcher_name">Hodinky</string>
+
+    <!-- Settings -->
+    <string name="clock_tab">Okno s časom</string>
+    <string name="alarm_tab">Okno s budíkom</string>
+    <string name="stopwatch_tab">Okno so stopkami</string>
+    <string name="show_seconds">Zobraziť sekundy</string>
+
+    <!--
+        Haven't found some strings? There's more at
+        https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res
+    -->
+</resources>
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 82aef00c..a04cd808 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -1,3 +1,3 @@
 <resources>
-    <dimen name="clock_text_size">54sp</dimen>
+    <dimen name="clock_text_size">70sp</dimen>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 17a02bae..5f86778e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -2,6 +2,12 @@
     <string name="app_name">Simple Clock</string>
     <string name="app_launcher_name">Clock</string>
 
+    <!-- Settings -->
+    <string name="clock_tab">Clock tab</string>
+    <string name="alarm_tab">Alarm tab</string>
+    <string name="stopwatch_tab">Stopwatch tab</string>
+    <string name="show_seconds">Show seconds</string>
+
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res