diff --git a/core/java/android/bluetooth/BluetoothHeadset.java b/core/java/android/bluetooth/BluetoothHeadset.java
index 900f005273c6c..c84643fc46b30 100644
--- a/core/java/android/bluetooth/BluetoothHeadset.java
+++ b/core/java/android/bluetooth/BluetoothHeadset.java
@@ -199,6 +199,25 @@ public final class BluetoothHeadset implements BluetoothProfile {
      */
     public static final String VENDOR_RESULT_CODE_COMMAND_ANDROID = "+ANDROID";
 
+    /**
+     * A vendor-specific AT command
+     * @hide
+     */
+    public static final String VENDOR_SPECIFIC_HEADSET_EVENT_XAPL = "+XAPL";
+
+    /**
+     * A vendor-specific AT command
+     * @hide
+     */
+    public static final String VENDOR_SPECIFIC_HEADSET_EVENT_IPHONEACCEV = "+IPHONEACCEV";
+
+    /**
+     * Battery level indicator associated with
+     * {@link #VENDOR_SPECIFIC_HEADSET_EVENT_IPHONEACCEV}
+     * @hide
+     */
+    public static final int VENDOR_SPECIFIC_HEADSET_EVENT_IPHONEACCEV_BATTERY_LEVEL = 1;
+
     /**
      * A vendor-specific AT command
      * @hide