New divers, this one's for you: entry-level pricing, essential functionality, and simple, one-button navigation. Select from four operating modes and manage two gases. The i100 also retains all your settings and calculations during battery changes. Stay safe with audible alarms and a high-visibility LED warning light.

• Four Operating Modes Dive how you like with Air, Nitrox, Gauge dive modes, plus Free Dive (tracks calculations to allow switching between dive modes and free dive)
• User-Changeable Battery&;nbsp;uses globally available standard batteries found at supermarkets and drugstores so you can easily replace as needed
• Memory Maintains settings and calculations during battery changes
• Intuitive, one-button Navigation Single-button access to last dive data (maximum depth and bottom time)
• Increased Safety Audible alarms and additional high-visibility LED warning light
• Updatable software User-updatable software gives you long-term access to the latest features and upgrades (optional download cable purchase required)
• Water Activation Water activation feature gives you a worry-free start to your dive
• History Mode History Mode lets you see your total dives, maximum depth, total dive hours, and lowest temperature. Records up to 24 dives
• Nitrox Mix Capability Up to 100% O2. Mix up to 2 Nitrox gases
• Deep Stop Optional deep stop with countdown timer
• Go Anywhere Salt or freshwater dive selection
• Altitude Adjustment Automatic altitude adjustment ensures an accurate profile

  Backlight		no
  Max Depth (Dive & Free Modes)		100m /330 ft
  Max FO2 setting		21% to 100%
  Multiple Gas		yes
  Max PO2		1.1 to 1.6
  Audible alarm		yes
  Gauge Mode		yes
  Freedive		yes
  Safety Stop		yes
  Book Mark		no

  Deep Stop user set		ON/OFF
  Logbook		yes
  History mode		yes
  Reset feature		no
  Download		yes
  Activation (wet or button)		yes
  Mounting option		Wrist
  ALT adjustable		auto adj.
  Ascent rate indicator		yes
  Plan mode		yes

  Calendar		yes
  Batt power indicator		yes
  LCD Display		Segment
  Compass		no
  Shortcut screen		no
  Colors		2
  Dive Profile		via Download
  Freedive Memory		via Download