Neck and Back Massager, Handheld Percussion Massage Gun with Multiple Speeds and Attachments. Versatile: Four attachments: Precision – which effects deep tissue regions and joints; Dual – soothes the neck and spine areas; Round – leg massager works large muscle groups like the thighs and calves; Flat Head – relieves the neck, spine, and Achilles tendon regions Adjustable: Six speed settings (1200 to 3200 RPM) for relaxed to vigorous muscle stimulation. Diverse: Use for fitness, circulation, relaxation, and/or physical therapy needs. Lightweight: Under 2 lbs.