Hollis M1 Mask harness except we’ve upgraded the battery

except we’ve upgraded the battery to a 21700 which lets us upgrade the lumens to 1500

Features include: Scupper valve

Ultrawarmth seals in warmth and creates a protective heat barrier so divers can stay warmer for longer

OC Recreational: Three gas nitrox computer with features for the serious recreational diving enthusiast

Hollis M1 Mask harness except we’ve upgraded the batteryThe M1 Mask raises the bar for optical quality and distortion free vision. The lens is made from Saint Gobain Diamant, a highly transparent extra clear glass which is valued for its unique appearance and optical qualities. The low iron oxide content gives it optimum clarity. Its light transmittance is greater than that of conventional glass. The use of extra clear glass results in a virtually colourless product which allows objects to remain vivid and