Suunto D4 Diving Computer User Manual

About this manual

This guide introduces the Suunto D4 diving computer, covering navigation, button functions, and initial setup such as time, alarm, and unit settings. It also explains pre‑dive preparations, dive‑mode configurations, and safety features like depth alarms and RGBM/Deep Stop algorithms.

Further sections cover post‑dive procedures, battery replacement, technical specifications, warranty information, and customer service contacts. A glossary of dive‑specific terms is included to help users understand the device’s displays and functions.

What's inside

• Welcome to the world of Suunto diving instruments
• Warnings, cautions, and notes
• Suunto D4 at a glance
• Getting started with your Suunto D4
• Before diving
• Dive mode settings
• Diving
• After diving
• Care and maintenance
• Technical data

Frequently asked questions

How do I set the alarm on the Suunto D4?

Use the menu option 4.1.1 Setting the alarm.

Where can I find instructions for battery replacement?

Battery replacement instructions are in section 9 BATTERY REPLACEMENT.

What warranty does Suunto provide for the D4?

Suunto offers a limited warranty for its diving computers and accessories, described in section 13 SUUNTO LIMITED WARRANTY.