Ratchet wrench capable of rotating quickly and driving rotation

A ratchet wrench capable of rotating quickly and driving rotation, comprising:

• a handle including an arm and a bar body connected to the arm, the bar body including an accommodating slot, the arm including a through hole communicating with the accommodating slot;
• a rotary head, the rotary head being connected to the arm and being rotatable with respect to the arm, the rotary head including a plurality of recess portions;
• a positioning mechanism, the positioning mechanism including a positioning element, a resilient body, and a block element, the resilient body receiving the positioning element and being received in the through hole, one end of the positioning element being correspondingly disposed at any of the recess portions, the block element being connected to the other end of the positioning element and being received in the accommodating slot;
• and
• a sleeve, the sleeve receiving the bar body while disposed corresponding to the accommodating slot the sleeve operably driving the block element to slide in the accommodating slot, so that the positioning element is positioned and selectively engaged with any of the recess portions,
• wherein the rotary head includes an outer housing and a coupling assembly assembled at the outer housing, and the recess portions are formed on the coupling assembly and on two opposite sides at a side surface of the outer housing;
• wherein the coupling assembly includes a ratchet member and an engagement mechanism, a ball receiving hole is formed on a lateral side of the ratchet member, and the engagement mechanism includes a push rod and a round ball, and wherein one of the recess portions is formed on an end surface of the push rod, the push rod includes a notch, the push rod is inserted through the ratchet member, and the round ball is assembled between the ratchet member and the push rod and is disposed corresponding to the ball receiving hole.