diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index 243ea69..08eee37 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -196,11 +196,22 @@
           num_images(num_images_),
           frame_timestamps_enabled(false) {
         timing.clear();
+        ANativeWindow* window = surface.window.get();
+        int64_t min_rdur;
+        int64_t max_rdur;
+        native_window_get_refresh_cycle_period(
+            window,
+            &min_rdur,
+            &max_rdur);
+        min_refresh_duration = static_cast<uint64_t>(min_rdur);
+        max_refresh_duration = static_cast<uint64_t>(max_rdur);
     }
 
     Surface& surface;
     uint32_t num_images;
     bool frame_timestamps_enabled;
+    uint64_t min_refresh_duration;
+    uint64_t max_refresh_duration;
 
     struct Image {
         Image() : image(VK_NULL_HANDLE), dequeue_fence(-1), dequeued(false) {}
@@ -345,9 +356,7 @@
                                 // timestamps to calculate the info that should
                                 // be reported to the user:
                                 //
-                                // FIXME: GET ACTUAL VALUE RATHER THAN HARD-CODE
-                                // IT:
-                                ti->calculate(16666666);
+                                ti->calculate(swapchain.min_refresh_duration);
                                 num_ready++;
                             }
                             break;
@@ -1274,13 +1283,13 @@
 VKAPI_ATTR
 VkResult GetRefreshCycleDurationGOOGLE(
     VkDevice,
-    VkSwapchainKHR,
+    VkSwapchainKHR swapchain_handle,
     VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties) {
+    Swapchain& swapchain = *SwapchainFromHandle(swapchain_handle);
     VkResult result = VK_SUCCESS;
 
-    // TODO(ianelliott): FULLY IMPLEMENT THIS FUNCTION!!!
-    pDisplayTimingProperties->minRefreshDuration = 16666666;
-    pDisplayTimingProperties->maxRefreshDuration = 16666666;
+    pDisplayTimingProperties->minRefreshDuration = swapchain.min_refresh_duration;
+    pDisplayTimingProperties->maxRefreshDuration = swapchain.max_refresh_duration;
 
     return result;
 }