King Will, not only No.1 brand of men's wedding band on Amazon King Will, not only an excellent brand of wedding band on Amazon, but also means the vow keeper. "I will take you to be my wife; to have and to hold from this day forward, for better, for worse, for richer, for poorer, in sickness and in health, to love and to cherish, so long as we both shall live. All this I vow and promise." King Will, the vow keeper Product Warranty We are committed to King Will's credit worthiness and hope all the rings can keep a good condition, so that we provide LIFETIME WARRANTY. But it normally only cover issues that were built-in to product itself, excluding the damage result from buyers themselves. Tungsten Ring Maintenance Tips 1.Tungsten ring cleaning: Your tungsten ring requires no complicated cleaning or maintenance procedures. To make a cleaning solution for tungsten jewelry, simply mix warm water with a few drops of mild soap. It is best to avoid using an ultrasonic jewelry cleaner when cleaning tungsten rings. 2.Tungsten Ring Care Tips: Keep your tungsten ring away from supersonic cleaner, steam cleaner or harsh chemicals which may cause spotting on the surface of the ring. Tungsten Rings are very durable but brittle and can crack under harsh impact. Although rare, dropping the ring onto a hard surface may cause a slight crack to the ring's surface. It is best to store your tungsten ring separately. When taking off tungsten ring, you can place it inside the free ring box and then put the box in a safe space. About the size measure Measure your finger size before purchase, for tungsten carbide ring can not be resized. The paper measurement is intended for reference only. We would like to suggest you have your finger sized at a jewelry store for an accurate ring size.