diff --git a/lib/luavgl/src/lvgl.lua b/lib/luavgl/src/lvgl.lua
index 13fd6908..c8aba5e0 100644
--- a/lib/luavgl/src/lvgl.lua
+++ b/lib/luavgl/src/lvgl.lua
@@ -1379,7 +1379,7 @@ end
 --- @field pad_gap? integer
 --- @field bg_color? integer | string text color in hex integer or #RGB or #RRGGBB format
 --- @field bg_opa? integer
---- @field bg_grad_color? integer
+--- @field bg_grad_color? integer | string text color in hex integer or #RGB or #RRGGBB format
 --- @field bg_grad_dir? integer
 --- @field bg_main_stop? integer
 --- @field bg_grad_stop? integer
diff --git a/src/audio/audio_fsm.cpp b/src/audio/audio_fsm.cpp
index 424b0eff..a8f1260f 100644
--- a/src/audio/audio_fsm.cpp
+++ b/src/audio/audio_fsm.cpp
@@ -276,7 +276,24 @@ void AudioState::react(const system_fsm::HasPhonesChanged& ev) {
 }
 
 void AudioState::react(const SetVolume& ev) {
-  // TODO.
+  if (ev.db.has_value()) {
+    if (sOutput->SetVolumeDb(ev.db.value())) {
+      commitVolume();
+      events::Ui().Dispatch(VolumeChanged{
+          .percent = sOutput->GetVolumePct(),
+          .db = sOutput->GetVolumeDb(),
+      });
+    }
+
+  } else if (ev.percent.has_value()) {
+    if (sOutput->SetVolumePct(ev.percent.value())) {
+      commitVolume();
+      events::Ui().Dispatch(VolumeChanged{
+          .percent = sOutput->GetVolumePct(),
+          .db = sOutput->GetVolumeDb(),
+      });
+    }
+  }
 }
 
 void AudioState::react(const SetVolumeLimit& ev) {
diff --git a/src/audio/bt_audio_output.cpp b/src/audio/bt_audio_output.cpp
index 04daf71f..7d6bade2 100644
--- a/src/audio/bt_audio_output.cpp
+++ b/src/audio/bt_audio_output.cpp
@@ -9,6 +9,7 @@
 #include <algorithm>
 #include <cstddef>
 #include <cstdint>
+#include <cmath>
 #include <memory>
 #include <variant>
 
@@ -54,11 +55,30 @@ auto BluetoothAudioOutput::GetVolume() -> uint16_t {
 }
 
 auto BluetoothAudioOutput::GetVolumePct() -> uint_fast8_t {
-  return static_cast<uint_fast8_t>(static_cast<int>(volume_) * 100 / 0x7f);
+  return static_cast<uint_fast8_t>(round(static_cast<int>(volume_) * 100.0 / 0x7f));
+}
+
+auto BluetoothAudioOutput::SetVolumePct(uint_fast8_t val) -> bool {
+  if (val > 100) {
+    return false;
+  }
+  uint16_t vol = (val * (0x7f))/100;
+  SetVolume(vol);
+  return true;
 }
 
 auto BluetoothAudioOutput::GetVolumeDb() -> int_fast16_t {
-  return 0;
+  double pct = GetVolumePct()/100.0;
+  if (pct <= 0) {
+    pct = 0.01;
+  }
+  int_fast16_t db = log(pct) * 20;
+  return db;
+}
+
+auto BluetoothAudioOutput::SetVolumeDb(int_fast16_t val) -> bool {
+  double pct = exp(val / 20.0) * 100;
+  return SetVolumePct(pct);
 }
 
 auto BluetoothAudioOutput::AdjustVolumeUp() -> bool {
diff --git a/src/audio/i2s_audio_output.cpp b/src/audio/i2s_audio_output.cpp
index 3fb99159..2a251685 100644
--- a/src/audio/i2s_audio_output.cpp
+++ b/src/audio/i2s_audio_output.cpp
@@ -111,6 +111,15 @@ auto I2SAudioOutput::GetVolumePct() -> uint_fast8_t {
   return (current_volume_ - kMinVolume) * 100 / (max_volume_ - kMinVolume);
 }
 
+auto I2SAudioOutput::SetVolumePct(uint_fast8_t val) -> bool {
+  if (val > 100) {
+    return false;
+  }
+  uint16_t vol = (val * (max_volume_ - kMinVolume))/100 + kMinVolume;
+  SetVolume(vol);
+  return true;
+}
+
 auto I2SAudioOutput::GetVolumeDb() -> int_fast16_t {
   // Add two before dividing in order to round correctly.
   return (static_cast<int>(current_volume_) -
@@ -118,6 +127,11 @@ auto I2SAudioOutput::GetVolumeDb() -> int_fast16_t {
          4;
 }
 
+auto I2SAudioOutput::SetVolumeDb(int_fast16_t val) -> bool {
+  SetVolume(val * 4 + static_cast<int>(drivers::wm8523::kLineLevelReferenceVolume) - 2);
+  return true;
+}
+
 auto I2SAudioOutput::AdjustVolumeUp() -> bool {
   if (GetVolume() >= max_volume_) {
     return false;
diff --git a/src/audio/include/audio_sink.hpp b/src/audio/include/audio_sink.hpp
index e11f3ce0..f31d0d75 100644
--- a/src/audio/include/audio_sink.hpp
+++ b/src/audio/include/audio_sink.hpp
@@ -59,6 +59,9 @@ class IAudioOutput {
   virtual auto GetVolumePct() -> uint_fast8_t = 0;
   virtual auto GetVolumeDb() -> int_fast16_t = 0;
 
+  virtual auto SetVolumePct(uint_fast8_t) -> bool = 0;
+  virtual auto SetVolumeDb(int_fast16_t) -> bool = 0;
+
   virtual auto AdjustVolumeUp() -> bool = 0;
   virtual auto AdjustVolumeDown() -> bool = 0;
 
diff --git a/src/audio/include/bt_audio_output.hpp b/src/audio/include/bt_audio_output.hpp
index a61e718a..74b0301a 100644
--- a/src/audio/include/bt_audio_output.hpp
+++ b/src/audio/include/bt_audio_output.hpp
@@ -35,7 +35,9 @@ class BluetoothAudioOutput : public IAudioOutput {
   auto GetVolume() -> uint16_t override;
 
   auto GetVolumePct() -> uint_fast8_t override;
+  auto SetVolumePct(uint_fast8_t val) -> bool override;
   auto GetVolumeDb() -> int_fast16_t override;
+  auto SetVolumeDb(int_fast16_t) -> bool override;
 
   auto AdjustVolumeUp() -> bool override;
   auto AdjustVolumeDown() -> bool override;
diff --git a/src/audio/include/i2s_audio_output.hpp b/src/audio/include/i2s_audio_output.hpp
index 5f3fc3ff..7954257a 100644
--- a/src/audio/include/i2s_audio_output.hpp
+++ b/src/audio/include/i2s_audio_output.hpp
@@ -33,7 +33,9 @@ class I2SAudioOutput : public IAudioOutput {
   auto GetVolume() -> uint16_t override;
 
   auto GetVolumePct() -> uint_fast8_t override;
+  auto SetVolumePct(uint_fast8_t val) -> bool override;
   auto GetVolumeDb() -> int_fast16_t override;
+  auto SetVolumeDb(int_fast16_t) -> bool override;
 
   auto AdjustVolumeUp() -> bool override;
   auto AdjustVolumeDown() -> bool override;