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Explains the function of each button on the dive computer for operation.
The default display mode showing time and calendar date.
Mode for open-circuit scuba diving, displaying dive time, depth, and NDL.
Mode for freediving, focusing on depth, dive time, and ascent/descent speeds.
A bottom timer displaying depth, dive time, and water temperature.
Allows divers to plan future dives by checking NDL and MOD limits.
A simple timer suitable for practice sessions, not for dive logging.
Stores and displays historical dive data including date, time, depth, and duration.
Allows customization of various dive computer functions and preferences.
Enables wireless data transfer between the dive computer and other devices.
Describes the watch mode display, status indicators, and automatic power-off features.
Displays the most recent dive log details including date, time, and dive reminders.
Shows dive counts, accumulated dive time, and maximum operating depth for scuba dives.
Displays dive counts, maximum operating depth, and length of time for freedives.
Configures the date format and time for the dive computer.
Sets the Coordinated Universal Time (UTC) and 12/24 hour time format.
Configures automatic mode activation and dive log start depth.
Sets the display language and provides an option to exit settings.
Shows dive time, depth, conservative factor, and PPO2 before a dive.
Displays dive depth, NDL, ascent/descent speed, and current time.
Provides larger display of dive depth, NDL, safety stop countdown, and water temperature.
Shows NDL status when nearing or exceeding the non-decompression limit.
Details decompression stops, ceiling depth, and alarm warnings when NDL is exceeded.
Displays decompression status and ceiling depth reminders with alarms.
Guides ascent to ceiling depth for decompression stops with countdown timers.
Indicates completion of decompression stops and safe ascent.
Explains behavior when safety or decompression stops are reached but not performed.
Shows dive profile at the end of a dive and guides to log mode for history.
Warns against further diving activity during the No Dive recommendation period.
Advises recreational divers against decompression diving due to risks and required training.
Configures the oxygen percentage (O2%) for Nitrox dives.
Adjusts Partial Pressure of Oxygen (PPO2) and conservative factor for dive calculations.
Enables and sets depth and dive time alarms for scuba diving.
Sets specific depth and time values for dive alarms to activate.
Configures data sampling rate and the depth for automatic dive log recording.
Sets dive log stop time and adjusts the user interface display.
Provides instructions to exit the current scuba mode settings.
Displays freediving counts, water temp, surface interval, and previous dive data.
Shows current depth, water temp, and dive time during a freedive.
Records maximum ascent/descent speeds and max depth within 11 hours.
Calculates average ascent/descent speeds over 11 hours.
Warns against diving during the No Dive recommendation period.
Enables and sets time-based alarms for freediving.
Enables and sets depth-based alarms for freediving.
Configures alarms for surface interval and specific dive time thresholds.
Sets specific depth and time values for freediving alarms.
Configures dive log start depth and provides an option to exit freediving mode.
Displays depth, dive time, average depth, and acts as a stopwatch.
Shows dive profile and reminders after completing a dive in Gauge Mode.
Warns against diving during the No Dive recommendation period after a Gauge Mode dive.
Allows planning future dives by setting O2%, CF, MOD, and checking NDL.
Alerts divers when preset PO2 values are reached, suggesting plan adjustments.
Warns against diving during the No Dive recommendation period after using Plan Mode.
A simple timer for practice, without dive logging or depth calculations.
Shows dive logs including mode, date, time, temperature, max depth, and dive time.
Notifies when the dive computer's memory is full and requires syncing or clearing.
Recommends downloading logs regularly and clearing memory via settings or app.
Configures watch mode settings and scuba mode settings.
Sets measurement units (Metric/Imperial) and auto power-off timer.
Adjusts button sound volume and backlight brightness levels.
Configures vibration feedback and clears residual nitrogen calculations.
Permanently deletes all dive logs; requires understanding of consequences.
Resets all custom settings to default, but retains dive logs and nitrogen calculations.
Erases all settings, custom configurations, and dive logs permanently.
Indicates the dive computer is ready to establish a wireless connection.
Confirms a wireless connection is active for data transfer.
Provides email and website for customer support and product information.
General| Brand | Crest Audio |
|---|---|
| Model | CR4 |
| Category | Diving Instrument |
| Language | English |
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