This is the Mares DUAL ADJ 62X Black 1st and 2nd Stage Diving Regulator Features: MATERIAL:Ultralight Technopolymer FINISH:Pearl Chrome FIRST STAGE:Balanced Diaphragm FIRST STAGE WEIGHT INT:742 g / 26.2 oz FIRST STAGE WEIGHT DIN:525 g / 18.5 oz SECOND STAGE WEIGHT:185 g / 6.7 oz TOTAL WEIGHT (G) INT:1057 g / 37.3 oz TOTAL WEIGHT DIN:840 g / 29.6 oz HIGH PRESSURE PORTS:2 HP 7/16" UNF Ports LOW PRESSURE PORTS:4 LP 3/8" UNF Ports HOSE TYPE:Superflex Hose HOSE LENGTH:75 cm The Dual Adj 62X scuba diving regulator is the smallest and most compact first stage ever made by Mares. That&';s why it&';s the perfect travel companion for divers all over the world. The Dual Adj second stage is pneumatically balanced with a PAD (Pneumatic Assisted Design) system, offering comfortable and effortless breathing in every situation.