This wireless massager utilizes low-frequency EMS pulse technology to effectively relieve muscle pain and promote muscle vitality. With 8 massage modes and 19 levels of intensity, you can customize your massage experience for maximum effectiveness. The cordless remote controller design offers convenience and easy operation. It is USB rechargeable, providing up to 2 hours of usage on a full charge. The 15-minute auto shut-off feature ensures safe and controlled massage sessions. With its lightweight and portable design, you can enjoy a soothing massage anytime, anywhere. Say goodbye to bulky neck massagers and embrace the compact and powerful Portable Rechargeable EMS Cervical Vertebra Massage Patch.