DescriptionThe item is a simple and fashion finger ring, which is mainly made of alloy, can be durable to wear, and it adopts Electrocardiograph color changing designed on the ring to make it more charming. It is suitable for both men and women to wear. A great gift for your loves and families, friends.Features- Color: As the pictures shown. - Material: Alloy. - Size 6: 16mm(Ring inner diameter); 50mm(perimeter). - Size 7: 17mm(Ring inner diameter); 53mm(perimeter). - Size 8: 18mm(Ring inner diameter); 56mm(perimeter). - Size 9: 19mm(Ring inner diameter); 60mm(perimeter). - Size 10: 20mm(Ring inner diameter); 63mm(perimeter). - Size 11: 21mm(Ring inner diameter); 66mm(perimeter). - Size 12: 22mm(Ring inner diameter); 69mm(perimeter). - The item is a simple and fashion finger ring, which is mainly made of alloy, can be durable to wear. - Color will change with your mood and the temperature of your finger. - Electrocardiograph color changing designed on the ring to make it more charming. - A great gift for your loves and families, friends.