diff --git a/src/notify/error.rs b/src/notify/error.rs
index c593e47..731d4de 100644
--- a/src/notify/error.rs
+++ b/src/notify/error.rs
@@ -175,3 +175,18 @@ impl Display for PollTimeoutFromIntError {
 }
 
 impl Error for PollTimeoutFromIntError {}
+
+#[derive(Debug)]
+pub enum MicrosecondsFromDurationError {
+    NoMicroseconds,
+}
+
+impl Display for MicrosecondsFromDurationError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::NoMicroseconds => write!(f, "Minimal precision is microseconds but no microseconds are within the Duration provided."),
+        }
+    }
+}
+
+impl Error for MicrosecondsFromDurationError {}
diff --git a/src/notify/mod.rs b/src/notify/mod.rs
index 2569150..e043c11 100644
--- a/src/notify/mod.rs
+++ b/src/notify/mod.rs
@@ -349,10 +349,10 @@ pub enum NotifyState<'a> {
     /// Tell the service manager to execute the configured watchdog option.
     WatchdogTrigger,
     /// Reset watchdog timeout value during runtime.
-    /// The value is in microseconds.
+    /// Minimal precision is microseconds, not nanoseconds.
     WatchdogUsec(types::Microseconds),
     /// Tells the service manager to extend the startup, runtime or shutdown service timeout corresponding the current state.
-    /// The value is in microseconds.
+    /// Minimal precision is microseconds, not nanoseconds.
     ExtendTimeoutUsec(types::Microseconds),
 }
 
@@ -373,11 +373,11 @@ impl<'a> Display for NotifyState<'a> {
             NotifyState::Stopping => f.write_str("STOPPING=1"),
             NotifyState::Watchdog => f.write_str("WATCHDOG=1"),
             NotifyState::WatchdogTrigger => f.write_str("WATCHDOG=trigger"),
-            NotifyState::WatchdogUsec(milliseconds) => {
-                write!(f, "WATCHDOG_USEC={milliseconds}")
+            NotifyState::WatchdogUsec(duration) => {
+                write!(f, "WATCHDOG_USEC={duration}")
             }
-            NotifyState::ExtendTimeoutUsec(milliseconds) => {
-                write!(f, "EXTEND_TIMEOUT_USEC={milliseconds}")
+            NotifyState::ExtendTimeoutUsec(duration) => {
+                write!(f, "EXTEND_TIMEOUT_USEC={duration}")
             }
         }
     }
diff --git a/src/notify/types.rs b/src/notify/types.rs
index a4d6a3c..66de4d4 100644
--- a/src/notify/types.rs
+++ b/src/notify/types.rs
@@ -1,6 +1,6 @@
 //! Newtypes used by [`NotifyState`](super::NotifyState)
 
-use core::fmt::Display;
+use core::{fmt::Display, time::Duration};
 
 use super::error;
 
@@ -88,24 +88,22 @@ impl Display for StatusLine<'_> {
 
 /// Semantic type representing a number of microseconds.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub struct Microseconds(u64);
+pub struct Microseconds(Duration);
 
-impl From<u64> for Microseconds {
-    fn from(value: u64) -> Self {
-        Self(value)
-    }
-}
+impl TryFrom<Duration> for Microseconds {
+    type Error = error::MicrosecondsFromDurationError;
 
-impl From<Microseconds> for u64 {
-    fn from(value: Microseconds) -> Self {
-        value.0
+    fn try_from(value: Duration) -> Result<Self, Self::Error> {
+        if value.as_micros() == 0 {
+            return Err(Self::Error::NoMicroseconds);
+        }
+        Ok(Self(value))
     }
 }
 
 impl Display for Microseconds {
-    #[inline]
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        Display::fmt(&self.0, f)
+        write!(f, "{}", self.0.as_micros())
     }
 }