An electronic table for decompression scuba dive planning, in both imperial and metric measurements.
Simply dial in your bottom time and your depth to find your decompression stops.
An info screen can remind you on some of the rules of the table.
The table assumes an ascent rate of 30fpm.
The "1st stop" is actually the ascent time from depth to the first stop (or surface if there is no required stop).
The various levels show dive stops in minutes.
Total dive time is the ascent to the first stop, all the stops combined, and the ascent time between stops and to the surface.
This is a reference tool only.
You should always refer to your training and to the materials provided by your certifying agency.
Strict adherence to ANY table does not guarantee you are safe from decompression sickness. Plan your dive, dive your plan... but do so at your own risk.