1. OUTLINE
This watch is an analog solar powered diver's watch into which an electronic
depth meter and chronograph function and chronograph function are built. The
solar power generation function transforms solar energy into electrical energy
to run the watch.
• Since solar energy is used as the power source of this watch, it has no need
of regular replacement of the battery unlike the general diver's watches
using the mercury cell, etc. (Solar power function)
• The built-in depth meter function automatically measures the depth in diving
with the watch worn on the wrist. (Depth meter function)
• The maximum depth in diving is automatically memorized. (Maximum depth
memorizing function)
• The chronograph function measures the time in units of one second for
50
minutes at maximum.
2. SPECIFICATIONS
Movement Caliber NO.
Type
Watch Accuracy (At normal
temperature)
Depth gauge accuracy
Operating temperature
Time
Calendar
Display
functions
Chronograph
Depth gauge
Maximum depth to be
memorized
Additional functions
Continuous
operating time
Additional
Comments
B740M / B741 M
Analog solar power watch
±15 sec/month (5'C-35OC/41"F-95"F)
At depth of 1 to 1 Om/5.0 to 25.Oft: within ± 1
m/±5.Oft
At depth of 1 to 1 to 50m/27.5 to 125.Oft: within
±2m/±7.5ft
On the condition that the water temperature is
constant and error in reading is excluded.
Temperature range for guaranteed accuracy: +10'C to
40'C/50'F to 104OF
Depth gauge accuracy is influenced by changes in
surrounding temperature.
-1OC to +60OC/14F to 40F
Hour, Minute, Second, 24-hour, Charge level
Date
Minute, Second (50-minute system)
1 m to 50m/5ft to 1 25ft
Reading in units of lm/5ft
Depth less than 1 m/5ft is indicated as 0m/Oft.
Depth more than 50m/1 25ft is indicated as over-zone
1 m to 50m/5ft to 1 25ft
*
Charge level indication function
*
Insufficient charge warning indication a Stop
warning function
*
Time reset warning function
*
From full charge to stopping: Approx. 2 months
*
From full charge to
NG
indication: Approx. 1 month
*
Form insufficient charge warning to stopping: Approx.
2 days
Movement Caliber B740: Depth indication in meters
Movement Caliber B741: Depth indication in feet
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