Our Acupressure tool utilizes the similar concepts of acupuncture to encourage flow and blocked energy without any needles or battery power (Please note this method of (Qi) energy release isnt for everyone just like acupuncture is not for everyone.) We do not advertise this device externally. Users normally recommend it to their friends and families after their successful results. Simply place the trigger reliever on your trouble spots and push the plunger the two crystals inside will create a small electrical stimulus that mimics acupuncture and helps release trapped energy (Qi) and soften trigger points. Helps to increase circulation and improve blood flow. New Improved Design Extended wing and rounded plunger makes it easy to apply the correct pressure directly to the area of tension. No needles No batteries required. Portable and convenient when you are traveling on the go. DO NOT USE - if you are pregnant have a pacemaker or a life threatening disease or injury. You should always speak with your physician or healthcare professional before trying any new device. NO Battery NO Needles.