The Rasengan is executed by molding chakra in the user's palm and forming it into a spiraling sphere of energy. Naruto's unique ability lies in his capability to create and manipulate the Rasengan with incredible precision and power. His mastery of this technique has evolved over the course of the series, and he has developed several variations of the Rasengan.
When Naruto employs the Rasengan, he typically channels a significant amount of chakra into his hand, creating a swirling sphere that emits a distinct sound. The technique doesn't rely on hand seals, showcasing Naruto's exceptional control over his chakra. The Rasengan is known for its versatility and destructive force, making it a formidable weapon in Naruto's arsenal.