diff --git a/README.md b/README.md
index a8586e6..4a3a883 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,12 @@ python -m playwright install chromium
 python main.py configure --marketplace de --download-dir "C:\Users\<USER>\Downloads\amazon_rechnungen"
 ```
 
+Explizit fuer Deutschland (Sprache/Zeitzone):
+
+```powershell
+python main.py configure --marketplace de --locale de-DE --timezone Europe/Berlin --currency EUR --download-dir "C:\Users\<USER>\Downloads\amazon_rechnungen"
+```
+
 Dann oeffnet sich ein Browser. Dort bei Amazon anmelden und auf Enter im Terminal druecken.
 Die Session wird lokal gespeichert in:
 
@@ -113,6 +119,7 @@ Optionen:
 - `--headless true|false`: Browser sichtbar oder unsichtbar
 - `--debug`: zeigt, wie viele Detailseiten und Rechnungslinks gefunden werden
 - `--debug-json [pfad]`: schreibt Laufdetails als JSON (ohne Pfad: Standarddatei)
+- `configure --locale de-DE --timezone Europe/Berlin`: erzwingt deutsche Sprache und Berliner Zeitzone im Browser-Kontext
 
 ## Hinweise
 
diff --git a/main.py b/main.py
index 8246fbc..bae0979 100644
--- a/main.py
+++ b/main.py
@@ -50,6 +50,18 @@ def save_config(config: dict) -> None:
     CONFIG_PATH.write_text(json.dumps(config, indent=2), encoding="utf-8")
 
 
+def build_context_options(config: dict) -> dict:
+    locale = config.get("locale", "de-DE")
+    timezone = config.get("timezone", "Europe/Berlin")
+    return {
+        "locale": locale,
+        "timezone_id": timezone,
+        "extra_http_headers": {
+            "Accept-Language": "de-DE,de;q=0.9,en;q=0.8",
+        },
+    }
+
+
 def parse_iso_date(value: str) -> date:
     try:
         return datetime.strptime(value, "%Y-%m-%d").date()
@@ -269,13 +281,16 @@ def configure(args) -> None:
         "marketplace": args.marketplace,
         "download_dir": str(Path(args.download_dir).expanduser().resolve()),
         "headless": args.headless,
+        "locale": args.locale,
+        "timezone": args.timezone,
+        "currency": args.currency,
     }
     save_config(config)
     ensure_app_dir()
 
     with sync_playwright() as p:
         browser = p.chromium.launch(headless=False)
-        context = browser.new_context()
+        context = browser.new_context(**build_context_options(config))
         page = context.new_page()
         page.goto(f"https://www.amazon.{args.marketplace}/your-orders/orders", wait_until="domcontentloaded")
         print("Bitte im Browser bei Amazon einloggen.")
@@ -312,7 +327,9 @@ def download(args) -> None:
 
     with sync_playwright() as p:
         browser = p.chromium.launch(headless=args.headless if args.headless is not None else bool(config.get("headless", True)))
-        context = browser.new_context(storage_state=str(STORAGE_STATE_PATH))
+        context_options = build_context_options(config)
+        context_options["storage_state"] = str(STORAGE_STATE_PATH)
+        context = browser.new_context(**context_options)
         page = context.new_page()
 
         base_orders_url = f"https://www.amazon.{marketplace}/your-orders/orders"
@@ -465,6 +482,9 @@ def build_parser() -> argparse.ArgumentParser:
     p_config.add_argument("--marketplace", default="de", help="z. B. de, com, co.uk")
     p_config.add_argument("--download-dir", default="~/Downloads/amazon_rechnungen")
     p_config.add_argument("--headless", action="store_true", help="Standard fuer Download-Lauf im Headless-Mode")
+    p_config.add_argument("--locale", default="de-DE", help="Browser-Locale, z. B. de-DE")
+    p_config.add_argument("--timezone", default="Europe/Berlin", help="Zeitzone, z. B. Europe/Berlin")
+    p_config.add_argument("--currency", default="EUR", help="Waehrungshinweis fuer Konfiguration")
     p_config.add_argument(
         "--login-wait-seconds",
         type=int,