Multiple gas capability manages up to 4 Nitrox mixes (with 4 transmitters), each with individual PO2 set points Audible alarms and color-changing segments provide cautions and warnings for additional safety Automatic altitude adjustment ensures an accurate profile Included adjustable bungee wrist mount and NATO band Pre-Dive planning feature allows a preview of planned dives to maximize your next adventure safely Automatic Safety Stop Countdown displayed in minutes and seconds for clarity Battery status indicator for both computer and transmitter 4 operating modes: Air, Nitrox, Gauge and Free Dive, so it's up for any adventure User-updatable software gives access to the latest features and upgrades Optional deep stop with countdown timer Salt or fresh water dive selection*DiverLog+ app can be downloaded for free from the App Store, Google Play or www.ediverlog.comOptions Transmitter up to 40% or 100%Included in the Box Download Cable NATO Wrist Band Bungee kit Lens Protector Quick Reference Card Digital Instruction Manual Paper Safety Reference DiverLog+ Brochure