I just received a 50cm model for Christmas. My packaging says zero English so here's what it is/does. The instructions say to open and close the clasp carefully. (The clasp is a single link.) I've tested mine against steel and magnets. It appears to be slightly magnetized along the entire length. therapeutic effect? It's too early to tell. But I appreciate that someone thought of me. It's therapeutic right here. :^)
STICKON Stainless Steel Gua Sha Scraper For Soft Tissue Mobilization And IASTM Therapy (M Shape) - Effective Massage Tool
43 Review
Versatile Back Massager with Heat - Perfect Gifts for Christmas, New Year, Mother’s Day, Father’s Day, Birthday - Shiatsu Neck & Shoulder Massager for Pain Relief and Muscle Relaxation
32 Review
Vacuum cleaner Polaris PVC 2003RI, grey/red
74 Review
Electric massager Kitfort KT-2905, black/grey
64 Review