6D hand-massage sensation shoulder and neck massager, compatible with both hand-pull and buckle styles. - Brand: JVYT - Product Name: Shoulder and Neck Massager - Features: 6D hand-massage sensation, heat therapy massage - Type: Hand-pull style, buckle style - Design: Cushioned, adjustable Thank you for viewing. I have only used it once after opening the package. There are no issues with the operation.