Shearwater VPM-B Upgrade
Upgrade your Predator, Perdix or Petrel dive computer to VPM-B decompression. With the Shearwater VPM-B Upgrade,
This upgrade gives you the option of using the standard GF deco or switching the the VPM-B algorithm.
Input your serial number in the order notes at checkout and your unlock code will be emailed to you within 24hrs.