Intensive and comprehensive, the high-intensity vibrating Hypersphere can be used for trigger point release on your tightest muscles so you can recover faster and move better. Accelerates warmup and recovery Enhances muscle performance Improves range of motion and flexibility Reduces muscle soreness and stiffness Digital circuitry control 3 speeds Rechargeable lithium-ion batteries ( 2+ hrs of use per charge) Dual exterior for grip and balance TSA approved for carry-on