diff --git a/wled_push.py b/wled_push.py
index 411badb..f4f5d9c 100644
--- a/wled_push.py
+++ b/wled_push.py
@@ -54,7 +54,9 @@ def main():
     p.add_argument("--on", action="store_true", help="Turn on")
     p.add_argument("--off", action="store_true", help="Turn off")
     p.add_argument("--toggle", "-t", action="store_true", dest="toggle", help="Toggle on/off")
-    p.add_argument("--bri", type=int, metavar="0-255", help="Brightness")
+    p.add_argument("--bri", type=int, metavar="0-255", help="Global brightness")
+    p.add_argument("--seg-bri", type=int, metavar="0-255", dest="seg_bri", help="Segment 0 brightness")
+    p.add_argument("--white", "-w", type=int, metavar="0-255", help="Segment 0 white channel (col[0][3], RGBW)")
     p.add_argument("--cct", type=int, metavar="0-255", help="Color temp: 0=warm, 255=cool white (segment 0)")
     p.add_argument("--preset", "-p", type=int, metavar="ID", help="Load preset by ID")
     p.add_argument("--v", action="store_true", help="Return full state in response")
@@ -74,6 +76,31 @@ def main():
         payload["on"] = "t"
     if args.bri is not None:
         payload["bri"] = max(0, min(255, args.bri))
+    if args.seg_bri is not None:
+        seg_bri = max(0, min(255, args.seg_bri))
+        payload.setdefault("seg", [])
+        seg0 = next((s for s in payload["seg"] if s.get("id") == 0), payload["seg"][0] if payload["seg"] else None)
+        if seg0 is None:
+            payload["seg"].insert(0, {"id": 0, "bri": seg_bri})
+        else:
+            seg0["bri"] = seg_bri
+    if args.white is not None:
+        w = max(0, min(255, args.white))
+        payload.setdefault("seg", [])
+        seg0 = next((s for s in payload["seg"] if s.get("id") == 0), payload["seg"][0] if payload["seg"] else None)
+        if seg0 is None:
+            payload["seg"].insert(0, {"id": 0, "fx": 0, "col": [[0, 0, 0, w], [0, 0, 0, 0], [0, 0, 0, 0]]})
+        else:
+            seg0.setdefault("col", [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]])
+            if len(seg0["col"]) < 1:
+                seg0["col"] = [[0, 0, 0, w], [0, 0, 0, 0], [0, 0, 0, 0]]
+            else:
+                prim = list(seg0["col"][0])
+                while len(prim) < 4:
+                    prim.append(0)
+                prim[3] = w
+                seg0["col"][0] = prim
+            seg0["fx"] = 0  # Solid so white channel is visible
     if args.cct is not None:
         cct = max(0, min(255, args.cct))
         payload.setdefault("seg", [])