Black Neck Cervical Spine Massager $ 7.85 Product Information: Power supply mode: not required Control method: mechanical Appearance shape: butterfly Applicable parts: neck, waist, legs, back, feet Gear position: infinitely variable Massage contacts: 2 Contact type: round massage head Item No.: Black Massage Ball Color: black frame + silver gray silicone ball, various colors customized-contact customer service Packing List: Plastic massager x1