Marcus Feld

Marcus maintains the hard-goods database behind this site: specifications, street-price histories, and manufacturer-published service intervals for 300+ dive computers, regulators, and BCDs, cross-referenced against maker documentation and years of public failure threads. His lane is data and published-spec teardowns — pressure ratings, algorithm documentation, service-kit part numbers — not dive instruction.

How Marcus works

Every spec he cites traces to a manufacturer document or a first-party price record. When sources disagree, the article says so. He does not review from a boat; he reviews from the paper trail the boats generate.