diff --git a/adafruit_fruitjam/__init__.py b/adafruit_fruitjam/__init__.py
index 7039a71..79d902e 100644
--- a/adafruit_fruitjam/__init__.py
+++ b/adafruit_fruitjam/__init__.py
@@ -248,17 +248,20 @@ class FruitJam(PortalBase):
     def sync_time(self, **kwargs):
         """Set the system RTC via NTP using this FruitJam's Network.
 
-        This is a convenience wrapper for ``self.network.sync_time(...)`` so
-        user code can simply call ``fruitjam.sync_time()``.
+        This is a convenience wrapper for ``self.network.sync_time(...)``.
 
-        Keyword args are passed through to ``Network.sync_time``:
-          - server (str)         : NTP host (default from NTP_SERVER or pool.ntp.org)
-          - tz_offset (float)    : hours from UTC (default from NTP_TZ + NTP_DST)
-          - timeout (float)      : socket timeout seconds (default from NTP_TIMEOUT or 5.0)
-          - cache_seconds (int)  : NTP cache seconds (default from NTP_CACHE_SECONDS or 0)
-          - require_year (int)   : sanity check lower bound (default 2022)
-        Returns:
-          time.struct_time
+        :param str server: Override NTP host (defaults to ``NTP_SERVER`` or
+            ``"pool.ntp.org"`` if unset).  (Pass via ``server=...`` in kwargs.)
+        :param float tz_offset: Override hours from UTC (defaults to ``NTP_TZ``;
+            ``NTP_DST`` is still added).  (Pass via ``tz_offset=...``.)
+        :param dict tuning: Advanced options dict (optional). Supported keys:
+            ``timeout`` (float, socket timeout seconds; defaults to ``NTP_TIMEOUT`` or 5.0),
+            ``cache_seconds`` (int; defaults to ``NTP_CACHE_SECONDS`` or 0),
+            ``require_year`` (int; defaults to ``NTP_REQUIRE_YEAR`` or 2022).
+            (Pass via ``tuning={...}``.)
+
+        :returns: Synced time
+        :rtype: time.struct_time
         """
         return self.network.sync_time(**kwargs)