G-Turbox is the right tool for you to relief muscles stiffness and tension after a long day. Interchangeable 6 Massage Heads: Ball Head - for large muscles Shovel Head – muscle junction Li-Head - for spine Finger Cone-Shaped Head - deep tissue massage Small Round Head – joints Small Flat Head – all body parts Features : Touch screen panel Rechargeable Lithium-Ion Battery (2 hours+ per charge) Adjustable speed levels (1-39) Cordless & lightweight