Mares, has always paid special attention and devotee's its self to ergonomic design. The material used in manufacturing Mares instruments boots, are highly shock resistant elastomer to protect the gauges accuracy, and affords a secure grip in every situation with any type of glove. The compact pressure gauge with its durable brass case and techno polymer lens has a luminesce dial for easy reading in day or night diving situations. Face of pressure gauge is color coded for safe air reserve in a glance. Pressure gauge has 0 to 5,000 psi readout with a safety reserve 1000 psi color coded in red to allow the diver to know that they are low on air. The 2000 psi to full scale is color coded in blue. The pressure gauges 7/16" UNF neoprene jacket double braided high-pressure hose has a 360° swivel and is 36" (90 cm) long. The compact gauge is 5.2" x 2.8" x 0.9" (132 x 70 x 23mm), weights 9.88 oz. (280 g). Gauge is nitrox ready to 40% oxygen out of the box. This very accurate oil filled depth gauge reads depth from 0' to 230' and comes equipped with a maximum depth indicator needle (MDIN). The MDIN is pushed by the gauge depth needle until the diver meets their maximum depth. The MDNI will remain at the maximum depth reached for the duration of the dive to indicate the diver's deepest depth reached during the dive. This feature allows the diver to not record that depth while diving, yet will be available upon surfacing for later calculations for re