Effective Pain Relief Massage Pen: It has no side effect to pain. Great for sports injuries, and muscle, joint and back pains and tight muscles in other parts of bodyUSB Rechargeable Electric Massage PenL: Built-in rechargeable 450 mAh Li-ion battery, no need to replace battery. Can work continuously for 3-4 hours when fully charged. Ergonomic handle design. Safe and effective, with no side effects. Great gift for families and friends.Premium Meridian Energy Acupressure Pen: come with 5 different tips for trigger point therapy, motor points, and auriculotherapy.Accupuncture Pens Trigger Point Compact And Portable:Compact and lightweight, just about 7.5 inches long, so you can easily put it in your pocket, handbag, backpack or pouch if you're traveling or perhaps just going to work for a long day and need relief from your painElectric Dab Pen with Nine Intensity Mode:You can adjust to the appropriate level of energy (0 - weakest and 9 - strongest) depending on the different treatment needs, when you feel a strong pulse by tilting the acupuncture pen around your body, that means you find the acupuncture points.