Atmos Mission One Watch Dive Computer | Divers Supply Written by: Bob Collins Created: 06/04/2020 Updated: 02/12/2026

FOR THE BEST DIVING EXPERIENCE

ATMOS Mission One: Affordable, Color Smart Computer

The ATMOS Mission is a stylish timepiece with a clean layout and color display. It is the perfect accessory for hanging out with your friends on land or on a scuba dive in the ocean. When diving, you will notice its simplicity with just a glance at the clear color-coded display. This computer makes it easy to locate exactly what you need to monitor your dive.

On land, it is easy on the eyes, comfortable, and functions as a daily timepiece. Atmos designed the Mission One with smartwatch-like functions: receiving messages/call notifications, stopwatch, alarm clock, second timezone, backlight, and digital compass. You can even upload dive site GPS locations to the Atmos divelog APP.

Available in 5 Colors:

Is it easy to use?

Mission One is extremely easy to use. Its intuitive 4-button design is simple and a snap to learn. The left button functions as a 'back' button. On the right, the middle button selects, while the top and bottom buttons allow you to scroll. It features an advanced alarm system with strong vibrations and vivid display notifications, an E-compass, and GPS to stay oriented underwater.

Key Features in the Ocean

Air & Nitrox Mode

• Bühlmann ZHL-16c Decompression mode (GF configurable)
• Single gas Air, Nitrox mode (Air mix 22-40%)
• Easy to read screen and big layout display
• Constant backlight & Digital compass
• Audible, vibration & display alarm system
• Ascent rate monitor
• 100 divelog memory with graphical display
• Reset residual nitrogen function

Freediving & Gauge Modes

Freediving Mode

• 5 sets of depth and time alarms
• Surface rest finish notification
• Ascent/descent rate monitor
• Stopwatch and GPS site recording

Gauge Mode

• Bottom timer & Digital compass
• Depth/time alarms
• Graphical divelog

Key Features on Land

Smartwatch Functions

• Message & Call notifications
• Stopwatch & Alarm clock
• Second timezone
• Wrist backlight activation
• Digital compass

GPS & Digital Compass Dive Log App

Dive Log APP

• Marks entry & exit GPS coordinates
• Surface dive spot guide
• Compass degree locking for precise navigation