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. for easy use and travel. Quietly Powerful: Unwind and recuperate in silence with up to 4 hours of operating time (depending on speed and pressure settings). Portable: Carry the FitRx percussion massager anywhere with its included, premium storage case. Charge Up: With the included universal USB cable!