diff --git a/src/Primitives/Traits/Collection/GetIterator.php b/src/Primitives/Traits/Collection/GetIterator.php
index 5f8abfe..f4aab76 100644
--- a/src/Primitives/Traits/Collection/GetIterator.php
+++ b/src/Primitives/Traits/Collection/GetIterator.php
@@ -4,9 +4,7 @@
 
 namespace Atournayre\Primitives\Traits\Collection;
 
-use Atournayre\Common\Exception\RuntimeException;
 use Atournayre\Contracts\Collection\GetIteratorInterface;
-use Atournayre\Contracts\Exception\ThrowableInterface;
 
 /**
  * Trait GetIterator.
@@ -18,13 +16,12 @@ trait GetIterator
     /**
      * Returns an iterator for the elements.
      *
-     * @throws ThrowableInterface
+     * @return \Traversable<array-key, mixed>
      *
      * @api
      */
-    // @phpstan-ignore-next-line Remove this line when the method is implemented
-    public function getIterator()
+    public function getIterator(): \Traversable
     {
-        RuntimeException::new('Not implemented yet!')->throw();
+        return $this->collection->getIterator();
     }
 }
diff --git a/tests/Unit/Primitives/Traits/Collection/GetIteratorTest.php b/tests/Unit/Primitives/Traits/Collection/GetIteratorTest.php
new file mode 100644
index 0000000..eace32c
--- /dev/null
+++ b/tests/Unit/Primitives/Traits/Collection/GetIteratorTest.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Atournayre\Tests\Unit\Primitives\Traits\Collection;
+
+use Atournayre\Primitives\Collection;
+use PHPUnit\Framework\TestCase;
+
+class GetIteratorTest extends TestCase
+{
+    public function testGetIteratorReturnsTraversable(): void
+    {
+        $collection = Collection::of([1, 2, 3]);
+
+        self::assertInstanceOf(\Traversable::class, $collection->getIterator());
+    }
+
+    public function testGetIteratorAllowsForeach(): void
+    {
+        $collection = Collection::of([1, 2, 3]);
+
+        $result = iterator_to_array($collection->getIterator(), false);
+
+        self::assertSame([1, 2, 3], $result);
+    }
+
+    public function testGetIteratorWithEmptyCollection(): void
+    {
+        $collection = Collection::of([]);
+        $count = 0;
+
+        foreach ($collection as $value) {
+            $count++;
+        }
+
+        self::assertSame(0, $count);
+    }
+
+    public function testGetIteratorPreservesKeys(): void
+    {
+        $collection = Collection::of(['a' => 1, 'b' => 2, 'c' => 3]);
+
+        $result = iterator_to_array($collection->getIterator(), true);
+
+        self::assertSame(['a' => 1, 'b' => 2, 'c' => 3], $result);
+    }
+
+    public function testGetIteratorWithNestedArrays(): void
+    {
+        $collection = Collection::of([
+            'user1' => ['name' => 'Alice'],
+            'user2' => ['name' => 'Bob'],
+        ]);
+
+        $result = iterator_to_array($collection->getIterator(), true);
+
+        self::assertSame([
+            'user1' => ['name' => 'Alice'],
+            'user2' => ['name' => 'Bob'],
+        ], $result);
+    }
+}