diff --git a/objects/span.json b/objects/span.json
index 80e480d70..0ae6fb086 100644
--- a/objects/span.json
+++ b/objects/span.json
@@ -5,7 +5,7 @@
   "name": "span",
   "attributes": {
     "duration": {
-      "description": "The total time, in seconds, that the span represents, calculated as the difference between start_time and end_time. It reflects the operation's performance and latency, independent of event timestamps, and accounts for normalized times used by observability tools to ensure consistency across distributed systems.",
+      "description": "The total time, in milliseconds, that the span represents, calculated as the difference between start_time and end_time. It reflects the operation's performance and latency, independent of event timestamps, and accounts for normalized times used by observability tools to ensure consistency across distributed systems.",
       "requirement": "optional"
     },
     "end_time": {
diff --git a/objects/trace.json b/objects/trace.json
index 667456b26..24b3b0fd1 100644
--- a/objects/trace.json
+++ b/objects/trace.json
@@ -5,7 +5,7 @@
   "name": "trace",
   "attributes": {
     "duration": {
-      "description": "The total time, in seconds, that the trace covers, calculated as the difference between start_time and end_time. This duration helps assess the overall performance of a request as it travels across various services, and is essential for identifying latency and potential bottlenecks within the distributed system. The trace duration may differ from individual span durations due to the propagation and processing times of the trace as it spans multiple components.",
+      "description": "The total time, in milliseconds, that the trace covers, calculated as the difference between start_time and end_time. This duration helps assess the overall performance of a request as it travels across various services, and is essential for identifying latency and potential bottlenecks within the distributed system. The trace duration may differ from individual span durations due to the propagation and processing times of the trace as it spans multiple components.",
       "requirement": "optional"
     },
     "end_time": {