Features:1. Innovative temperature color change mood bracelet with different size optional.2. Your own body temperature will cause mood ring to change colour to reveal your inner emotions. Black when below 14 degC, change color between 14-38 degC.3. Color changing bracelet is made of copper, durable, anti-rust.4. Smooth, shiny, stylish, add more elegance and grace to your looks.5. Great gift for women, friends, family. For birthday, anniversary, holidays, New Year, Christmas, Valentine's Day, etc.Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement.Specification:Type: mood color change braceletMetal material: copperProduct size: width 6mmBracelet diameter: 60mm-63mm- 65mm three sizes optionalFeatures: Change color with temperature change, black when below 14 degC, change color between 14-38 degCincludes:1 x bracelet