JBL The Zero Mask M-130 Outdoor Electronics Decompression calculation range: 3' to

Decompression calculation range: 3' to 394' (0

monitor tank pressure and provide true remaining bottom time (RBT) calculations based on the workload from breathing

High pressure only – maximum 5000 psi

including screws and instructions on how to attach

Small: 4-8

JBL The Zero Mask M-130 Outdoor Electronics Decompression calculation range: 3' toAs the name implies, this mask takes volume down to the bare minimum. The soft silicone skirt cradles your face delivering a perfect seal and all day comfort. Large tempered lenses provide a huge field of view and matte finish frame adds an additional level of stealth. Easy adjust straps make for quick fit adjustments and confident face sealing. Comfort and performance; the Zero is the ultimate low volume mask.