diff --git a/pomodoro-timer/README.md b/pomodoro-timer/README.md
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+# Pomodoro Timer
+
+A CLI-based productivity tool that implements the Pomodoro Technique for effective time management.
+
+## What is the Pomodoro Technique?
+
+The Pomodoro Technique is a time management method developed by Francesco Cirillo in the late 1980s. It uses a timer to break work into intervals, traditionally 25 minutes in length, separated by short breaks. Each interval is known as a pomodoro, from the Italian word for tomato, after the tomato-shaped kitchen timer Cirillo used as a university student.
+
+## How It Works
+
+1. Choose a task to work on
+2. Set the timer for 25 minutes (one pomodoro)
+3. Work on the task until the timer rings
+4. Take a short 5-minute break
+5. After every 4 pomodoros, take a longer 15-minute break
+6. Repeat the cycle
+
+## Features
+
+- Configurable work and break durations
+- Automatic session counting
+- Long break after every 4 work sessions
+- Clean CLI display with countdown timer
+- Graceful exit with session summary on Ctrl+C
+
+## Usage
+
+Run the timer with default settings (25 min work, 5 min short break, 15 min long break):
+
+```bash
+python pomodoro_timer.py
+```
+
+Customize the durations:
+
+```bash
+python pomodoro_timer.py --work 30 --short-break 10 --long-break 20
+```
+
+## Requirements
+
+- Python 3.6 or higher
+- No external dependencies (uses only standard library modules)
+
+## Implementation Details
+
+This implementation uses Python's built-in `argparse` module for command-line argument parsing, `time.sleep()` for the countdown mechanism, and carriage return (`\r`) for inline timer display updates. The timer runs in an infinite loop until interrupted by the user with Ctrl+C, at which point it displays a summary of completed sessions.
diff --git a/pomodoro-timer/pomodoro_timer.py b/pomodoro-timer/pomodoro_timer.py
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+"""
+Pomodoro Timer - A CLI productivity tool
+
+Implements the Pomodoro Technique: 25-minute work sessions followed by
+5-minute short breaks, with a 15-minute long break after every 4 sessions.
+
+Usage:
+    python pomodoro_timer.py [--work MINUTES] [--short-break MINUTES] [--long-break MINUTES]
+
+Example:
+    python pomodoro_timer.py --work 25 --short-break 5 --long-break 15
+"""
+
+import argparse
+import sys
+import time
+
+
+def display_timer(seconds: int, session_type: str) -> None:
+    """Display a countdown timer with session type label.
+
+    Args:
+        seconds: Remaining time in seconds.
+        session_type: Label for the current session (e.g., 'Work', 'Short Break').
+    """
+    minutes = seconds // 60
+    secs = seconds % 60
+    print(f"\r  {session_type}: {minutes:02d}:{secs:02d}  ", end="", flush=True)
+
+
+def countdown(duration_minutes: int, session_type: str) -> None:
+    """Run a countdown timer for the specified duration.
+
+    Args:
+        duration_minutes: Length of the timer in minutes.
+        session_type: Label displayed during the countdown.
+    """
+    total_seconds = duration_minutes * 60
+    for remaining in range(total_seconds, -1, -1):
+        display_timer(remaining, session_type)
+        time.sleep(1)
+    print()  # New line after timer completes
+
+
+def run_pomodoro(work_min: int, short_break_min: int, long_break_min: int) -> None:
+    """Execute the full Pomodoro Technique cycle.
+
+    Runs 4 work sessions with short breaks in between, followed by a long break.
+    After the long break, the cycle repeats indefinitely until interrupted.
+
+    Args:
+        work_min: Duration of each work session in minutes.
+        short_break_min: Duration of short breaks in minutes.
+        long_break_min: Duration of the long break in minutes.
+    """
+    session_count = 0
+
+    print("=" * 50)
+    print("  POMODORO TIMER")
+    print("  Press Ctrl+C to stop at any time")
+    print("=" * 50)
+
+    try:
+        while True:
+            session_count += 1
+            print(f"\n>>> Session {session_count} starting...")
+
+            countdown(work_min, "Work")
+            print("  Work session complete! Time for a break.")
+
+            if session_count % 4 == 0:
+                print(f"  Great job! Taking a long break ({long_break_min} min).")
+                countdown(long_break_min, "Long Break")
+            else:
+                print(f"  Taking a short break ({short_break_min} min).")
+                countdown(short_break_min, "Short Break")
+
+            print("  Break over. Ready for the next session!")
+
+    except KeyboardInterrupt:
+        print(f"\n\nTimer stopped. Completed {session_count} session(s).")
+        print("Stay productive!")
+        sys.exit(0)
+
+
+def parse_arguments() -> argparse.Namespace:
+    """Parse command-line arguments for timer configuration.
+
+    Returns:
+        Parsed arguments namespace with work, short_break, and long_break values.
+    """
+    parser = argparse.ArgumentParser(
+        description="Pomodoro Timer - Boost your productivity with timed work sessions"
+    )
+    parser.add_argument(
+        "--work", type=int, default=25, help="Work session duration in minutes (default: 25)"
+    )
+    parser.add_argument(
+        "--short-break", type=int, default=5, help="Short break duration in minutes (default: 5)"
+    )
+    parser.add_argument(
+        "--long-break", type=int, default=15, help="Long break duration in minutes (default: 15)"
+    )
+    return parser.parse_args()
+
+
+if __name__ == "__main__":
+    args = parse_arguments()
+    run_pomodoro(args.work, args.short_break, args.long_break)