☆✨Thank you very much for viewing!✨☆ ◉ This product is the "Nakayama-shiki Kaiyoki" 2-ball cervical K-type, a shiatsu substitute device for relieving neck stiffness. ◉ It is a health device that presses the body's pressure points like shiatsu, promoting blood circulation and relieving stiffness and fatigue in the neck muscles. ◉ I found it while organizing my closet. ◉ I have hardly used it. ◉ It's a remarkable item from the distant Showa era. ◉ Retro Product Details 【Country of Manufacture】 Made in Japan (MADE IN JAPAN TOKYO) is written on it. 【Condition】 It is very clean, with no fading or scratches. 【Purpose】 Effective for relieving neck stiffness and fatigue. 【Color】 White (spherical surface is silver) 【Size】 (Approx.) 2-ball type: 11cm long x 14.5cm wide x 7.5cm high 【Material Body】 ABS resin 【Spring Part】 Steel 【Ball Head】 Chrome-plated finish 【How to Use:】 Lie on your back on the Kaiyoki (product) and apply your weight, which will press the ball heads against the pressure points. 【Please Note】 Avoid using it on soft surfaces such as beds or futons. 【Accessories】 Spherical cap (plastic). 【Shipping Method】 I will wrap it in bubble wrap and ship it via Rakuraku Mercari. ☆✨The entire product has been disinfected with alcohol before listing.✨☆ ✨This is, after all, a used item that has been stored for a long time. We appreciate your understanding before purchasing.✨