Prospera's beautiful Dolphin Percussion Massager, with its streamlined handle, brings steady, relaxing massages to tired muscles. Your neck, shoulders and back will sigh with relief when you sooth them with the Prospera Dolphin. You can achieve a deep-tissue massage just by applying slight pressure on the muscle with the Prospera Dolphin's single head. 3,000 pulses per minute. Powerful percussion, Streamlined design. Massage is delivered to deeper layers of muscle.