Whether small or large muscle groups need some attention, the Shock One by Y&Y Vertical is ready for any situation at any time. This compact massage device can be charged via USB and then used independently of a power source with four vibration intensities. A total of five attachments allow for targeted treatment of different muscle groups, making the Shock One an easy way to reduce recovery time and alleviate pain. It can address the Achilles tendon just as effectively as large muscles in the thigh or upper arm, flat muscle groups in the back or chest, or even deep-seated small muscle strands that typically evade access by the untrained hand.