Here's what you need to know about the Halcyon Symbios computers

This is the long and detailed review on the ‪@HalcyonDiveSystems‬' Symbios Dive computers, transmitter, and App. I will discuss how it stacks up against ‪@ShearwaterResearch‬'s Petrel 3, and ‪@Garmin‬'s X50i in terms of price, size, capabilities, features, battery life, and everything in between. If you prefer a much shorter review, check out:    • Very impressed by the Halcyon Symbios Dive...