Accelerates warmup and recovery Improves range of motion and flexibility Reduces muscle soreness and stiffness Enhances muscle performance With surprising power and whisper-quiet operation, the GO was designed with simplicity in mind. Ultra lightweight and 30% smaller than the Hypervolt, the GO is ready to provide relief wherever you roam. Brushless high-torque 40 W motor Patented Quiet Glide™ technology 3 speed settings 2 interchangeable head attachments 18 V rechargeable lithium-ion battery Lightweight, easy to use TSA approved for carry-on We cannot accept returns on this item for both Hygiene and allergy grounds; we can’t guarantee that a device hasn’t been used with, or in the presence of, massage oils or waxes which another customer may have a serious allergic reaction to.