diff --git a/app/src/main/java/com/bitcointxoko/gudariwallet/util/NotificationHelper.kt b/app/src/main/java/com/bitcointxoko/gudariwallet/util/NotificationHelper.kt
index b8f1250..1cd3d91 100644
--- a/app/src/main/java/com/bitcointxoko/gudariwallet/util/NotificationHelper.kt
+++ b/app/src/main/java/com/bitcointxoko/gudariwallet/util/NotificationHelper.kt
@@ -14,7 +14,6 @@ import com.bitcointxoko.gudariwallet.R
 object NotificationHelper {
 
     // ── Intent extra key — read by MainActivity ───────────────────────────────
-    // Public so MainActivity can reference it without a magic string.
     const val EXTRA_PAYMENT_HASH = "extra_payment_hash"
 
     // ── Channel setup ─────────────────────────────────────────────────────────
@@ -25,10 +24,10 @@ object NotificationHelper {
         nm.createNotificationChannel(
             NotificationChannel(
                 NotificationConstants.CHANNEL_PAYMENTS,
-                "Payments",
+                context.getString(R.string.notif_channel_payments_name),
                 NotificationManager.IMPORTANCE_HIGH
             ).apply {
-                description = "Incoming and outgoing Lightning payment alerts"
+                description = context.getString(R.string.notif_channel_payments_desc)
                 enableVibration(true)
                 enableLights(true)
             }
@@ -37,10 +36,10 @@ object NotificationHelper {
         nm.createNotificationChannel(
             NotificationChannel(
                 NotificationConstants.CHANNEL_SERVICE_STATUS,
-                "Wallet Monitor",
+                context.getString(R.string.notif_channel_service_name),
                 NotificationManager.IMPORTANCE_LOW
             ).apply {
-                description = "Background service monitoring for incoming payments"
+                description = context.getString(R.string.notif_channel_service_desc)
                 setShowBadge(false)
                 enableVibration(false)
                 setSound(null, null)
@@ -56,8 +55,9 @@ object NotificationHelper {
      * screen for [paymentHash].
      */
     fun notifyPaymentReceived(context: Context, amountSats: Long, memo: String?, paymentHash: String) {
-        val title = "Payment received · +$amountSats sats"
-        val text  = if (!memo.isNullOrBlank()) memo else "No memo"
+        val title = context.getString(R.string.notif_payment_received_title, amountSats)
+        val text  = if (!memo.isNullOrBlank()) memo
+        else context.getString(R.string.notif_payment_received_no_memo)
 
         val notification = NotificationCompat.Builder(context, NotificationConstants.CHANNEL_PAYMENTS)
             .setSmallIcon(R.drawable.ic_notification)
@@ -70,7 +70,7 @@ object NotificationHelper {
             .setStyle(
                 NotificationCompat.BigTextStyle()
                     .bigText(text)
-                    .setSummaryText("+$amountSats sats")
+                    .setSummaryText(context.getString(R.string.notif_payment_received_summary, amountSats))
             )
             .build()
 
@@ -83,8 +83,8 @@ object NotificationHelper {
      * screen for [paymentHash].
      */
     fun notifyPaymentSent(context: Context, amountSats: Long, paymentHash: String) {
-        val title = "Payment sent"
-        val text  = "−$amountSats sats"
+        val title = context.getString(R.string.notif_payment_sent_title)
+        val text  = context.getString(R.string.notif_payment_sent_text, amountSats)
         notify(
             context,
             NotificationConstants.NOTIF_ID_PAYMENT_SENT,
@@ -97,8 +97,8 @@ object NotificationHelper {
     fun buildServiceNotification(context: Context): Notification {
         return NotificationCompat.Builder(context, NotificationConstants.CHANNEL_SERVICE_STATUS)
             .setSmallIcon(R.drawable.ic_notification)
-            .setContentTitle("Gudari Wallet")
-            .setContentText("Monitoring for incoming payments")
+            .setContentTitle(context.getString(R.string.notif_service_title))
+            .setContentText(context.getString(R.string.notif_service_text))
             .setOngoing(true)
             .setSilent(true)
             .setShowWhen(false)
@@ -117,9 +117,9 @@ object NotificationHelper {
     // ── Private helpers ───────────────────────────────────────────────────────
 
     private fun buildPaymentNotification(
-        context: Context,
-        title: String,
-        text: String,
+        context    : Context,
+        title      : String,
+        text       : String,
         paymentHash: String
     ): Notification {
         return NotificationCompat.Builder(context, NotificationConstants.CHANNEL_PAYMENTS)
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
new file mode 100644
index 0000000..6bee854
--- /dev/null
+++ b/app/src/main/res/values-es/strings.xml
@@ -0,0 +1,19 @@
+<resources>
+
+    <!-- NotificationHelper -->
+    <string name="notif_channel_payments_name">Pagos</string>
+    <string name="notif_channel_payments_desc">Alertas de pagos Lightning entrantes y salientes</string>
+    <string name="notif_channel_service_name">Monitor de cartera</string>
+    <string name="notif_channel_service_desc">Servicio en segundo plano para pagos entrantes</string>
+
+    <string name="notif_payment_received_title">Pago recibido · +%1$d sats</string>
+    <string name="notif_payment_received_no_memo">Sin nota</string>
+    <string name="notif_payment_received_summary">+%1$d sats</string>
+
+    <string name="notif_payment_sent_title">Pago enviado</string>
+    <string name="notif_payment_sent_text">−%1$d sats</string>
+
+    <string name="notif_service_title">Gudari Wallet</string>
+    <string name="notif_service_text">Monitorizando pagos entrantes</string>
+
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a1407d0..8c12949 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,4 +1,20 @@
 <resources>
     <string name="app_name">Gudari Wallet</string>
     <string name="nfc_hce_description">Gudari Wallet NFC payment sharing</string>
+    <!-- NotificationHelper -->
+    <string name="notif_channel_payments_name">Payments</string>
+    <string name="notif_channel_payments_desc">Incoming and outgoing Lightning payment alerts</string>
+    <string name="notif_channel_service_name">Wallet Monitor</string>
+    <string name="notif_channel_service_desc">Background service monitoring for incoming payments</string>
+
+    <string name="notif_payment_received_title">Payment received · +%1$d sats</string>
+    <string name="notif_payment_received_no_memo">No memo</string>
+    <string name="notif_payment_received_summary">+%1$d sats</string>
+
+    <string name="notif_payment_sent_title">Payment sent</string>
+    <string name="notif_payment_sent_text">−%1$d sats</string>
+
+    <string name="notif_service_title">Gudari Wallet</string>
+    <string name="notif_service_text">Monitoring for incoming payments</string>
+
 </resources>
\ No newline at end of file