Huge Gem Flashing Heart Rings are fun and romantic rings for date night, bachelorette parties and Valentine's Day! Huge Gem Flashing Heart Rings have a plastic open-end band that fits most fingers (plastic sides can be stretched out a bit for adults). Activate by pressing button under the huge gem. LEDs twinkle flash only. Dimensions: Height: 1.50 in. Diameter: 1.87 in. LED Colors: All Red. Batteries for this item are NOT replaceable.