The Pressure Gauge has readout from 0 to 400 bars with pressure numerical indicators from 50 to 400 bars in 50 bar increments. The 0 to 50 bar section is color coded red for added safety. Gauge has Luminous Dial for easy reading in Low Light or Night Diving Conditions. The Pressure Gauge is protected with a Durable Rubber Gauge Boot with Multiple Eyelets for attachment of a Lanyard or Clip. The Gauge has a standard 7/16" Threaded Hose for attachment to the First Stage Regulator.