diff --git a/GalaxyBudsClient/Message/SppAlternativeMessage.cs b/GalaxyBudsClient/Message/SppAlternativeMessage.cs
index ef1a81b0..76836506 100644
--- a/GalaxyBudsClient/Message/SppAlternativeMessage.cs
+++ b/GalaxyBudsClient/Message/SppAlternativeMessage.cs
@@ -89,6 +89,8 @@ public enum AltProperty : short
         FEATURE_TWP = 283,
         FEATURE_LE_AUDIO = 284,
         FEATURE_AURACAST = 285,
+        FEATURE_RESPONSIVE_HEARING = 287,
+        FEATURE_LOW_LATENCY_MODE = 290,
         ALL_CURRENT_STATES = 512,
         STATE_MODEL = 513,
         STATE_COUPLED = 514,
@@ -134,7 +136,8 @@ public enum AltProperty : short
         STATE_RECHARGE_CRADLE = 554,
         STATE_TWP_SE = 555,
         STATE_TWP_PE = 556,
-        STATE_TWP_CACHED = 557,
+        STATE_TWP_CACHED = 557,  
+        STATE_RESPONSIVE_HEARING = 559,
         CMD_SUBSCRIBE = 769,
         CMD_TERMINATE_PROFILE = 770,
         CMD_SUPPORT_SBM = 771,
@@ -145,6 +148,7 @@ public enum AltProperty : short
         CMD_PERSONALIZED_NAME_VALUE = 776,
         CMD_CTRL_TWP_RUN = 777,
         CMD_RE_PAIR_FOR_LEAUDIO = 778,
+        CMD_CTRL_LOW_LATENCY_MODE = 780,
         ALL_DESCRIPTIONS = 1024,
         DESCRIPTION_EIR_MANU_DATA = 1025,
         REPLY_RELAY_CALL_ANSWER = 1282