Instruments & Accessories:
Dive Computers, Spools, Lights & More

Not everything you carry is life support—but a lot of it still matters. From computers and compasses to lights, spools, and surface markers, this category covers the tools that improve your awareness, safety, and capability underwater.

This section helps you choose accessories that are actually worth carrying—and avoid cluttering your setup with gear you don’t need.

Dive Computers & SPGs

From basic consoles to advanced tech computers, this section helps you understand what features really matter—and why many divers still carry analog SPGs.

• Best Dive Computers: Features, Functions & Top Picks [COMING SOON]
• SPG vs. Air-Integrated Computers: Pros, Cons & What’s Best for You
• Is the Perdix II the Best Dive Computer for Serious Divers? [COMING SOON]
• Is the Apple Watch Ultra 2 a Legit Backup Dive Computer? [COMING SOON]

Navigation Tools

A reliable compass can make or break a dive. Learn how to choose one that works well in real conditions—and how to mount it properly.

• How to Navigate Underwater: Natural Navigation & Compass Use [COMING SOON]
• How to Mount a Compass on a Bungee Wrist Strap [COMING SOON]
• Suunto SK8 Compass – The Best Wrist-Mount Compass? [COMING SOON]

Lights

Whether you're diving at night or just peeking into cracks and crevices, a good light makes all the difference. Learn what makes a solid primary or backup light.

• How to Choose the Best Dive Light: Primary vs. Backup & What to Look For
• Best Backup Dive Lights for Recreational Divers
• OrcaTorch D720 – The Best Primary Dive Light Under $200? [COMING SOON]
• OrcaTorch D630v2 Canister Light Review [COMING SOON]

SMBs & Spools

Surface markers and spools are essential safety gear—but the details matter. These pages break down inflation methods, spool types, and deployment techniques.

• SMBs (Surface Marker Buoys): What You Need to Know
• Why I Always Dive with a Halcyon Defender Spool [COMING SOON]
• Reels vs. Spools: What’s the Difference?
• Learning to Use a DSMB [COMING SOON]
• xDeep dSMB (Large Life Ring Style) [COMING SOON]