Keep tabs on your fever with the Heat-Sensitive Thermometer Titanium Steel Ring Simply wear this ring for 30 seconds and your temperature will appear Great for keeping an eye on your temperature while out and about Made from durable titanium steel for long-lasting quality Rust, corrosion and wear-resistant finish that is comfortable to wear Comes presented in a stylish ring box Surface width: 8mm Choose from 2 colours: black or silver Available in 6 sizes: 16mm, 17mm, 18mm, 19mm, 20mm or 21mm Save 66% on the Heat-Sensitive Thermometer Titanium Steel Ring - now only 7.50 pounds