The product is a set of two Krypton PR bulbs with a P13.5S base and a flange base style. The bulbs have a voltage of 2.4V and a current of 0.7A, and are designed as accessory replacements for "2D" AND 2C cell flashlights. The packaging includes protective wrap and the base metal is made of BRASS Nickel Plate. The product is compatible with D cell batteries and is suitable for use in flashlights, headlamps, viewers, and medical applications.