1683 28 volt

These are direct replacement LEDs. They are made from the highest quality plastics and electronic components available. Size measures in mm. 23H x 17W  

Voltage 28 AC or DC, as these are fully rectified. Current is  amps for power consumption of watts. This is many times less power used than a 1683 bulb.

Temperature is much cooler also. LEDs 23.4C/74F, vs bulb temperature of 38C/100F.

Colors: White, Warm White.