Fangrui Product Details 1. Color Changing Bracelet: The Color Of Beads Can Be Changed According To The Surrounding Temperature.2. Adjustable: It Can Be Easily Adjusted And Is Suitable For Most People's Wrists, Children, Teenagers And Adults; The Adjustable Knot On The Strong Braided Rope Makes It Easy To Slide, Providing A Comfortable Fit For Men And Women.3. Color Rope Bracelet: The Color Changing Bracelet Shows A Magical Color On The Wrist, And The Beautiful Multi-color Beads Seamlessly Switch Between Black, Dark Green, Green, Navy, Blue, Light Blue, Brown, Yellow, Pink And Purple.4. Bracelet Material: It Is Made Of Two Kinds Of Beads, Black Beads Are Made Of Hematite, And Thermochromic Beads Are Made Of Copper And Epoxy Resin.5. Health Care Effect: Long Term Wearing Can Dredge Blood Vessels, Alleviate Insomnia, And Make Your Body And Mind Healthier.6. Ideal Gift: It Is A Gift For Parents, Husbands, Girlfriends, Boyfriends And Wives. It Is A Great Birthday Gift And Holiday Gift. It Is The Gift For Any Occasion.specification:material: Woven Rope + Hematite + Discolored Beadssize: About 21cm (adjustable)applicable To: Daily Wear, Party, Date And Gift Givingmaterial: Alloy + Woven Rope,size: The Total Length Is About 21 Cm (adjustable) And The Diameter Of The Bead Is 8mm.with Two Kinds Of Beads, Black Gallstone And Temperature Transfer Beads, The Temperature Transfer Beads Will Change Color According To The Somatosensory Temperature.