Casio's first series of pressure sensors in the field of digital display in the late 1980s, to the first diving recording function series dep in the early 90s, under the huge publicity at that time, after decades, is still a classic in the new and old card fans. Compared with the digital display field, the audience of this dual display model from the late 80s is particularly cold. Coupled with the relatively modest design of the case, the strong heart does not seem to be remembered by the world.
In fact, Casio debuted the pressure sensor in the late 1980s, this dual display arw320 from Casio released in 1989, the application of pressure sensor function seems to be more vivid than the digital display model bm100.
Alti-depth meter arw320, relative to the name, the mediocre appearance seems a little unbelievable to the small piece of plastic in front of you. The whole machine uses an all-plastic body shell, except for the back cover, sensor cover, and pointer handle, and the rest does not have a little metal material. The outer frame of the round dial is simply and directly marked with the function text of the four buttons, and the left side extends to highlight the sensor housing and is covered by a small openwork iron sheet at the upper end. Arw320 sensor appearance ratio can be said to be Casio's lowest-key design case, according to Casio's traditional approach, the sensor shape is generally known for its exaggerated domineering, even if it is the same design style as the aw320 aw330, aw340 also has to make the plus domineering sensor collision cover.
The pointer dial is laid out in a semicircle, and the scale indicator bar also uses relatively simple long lines. The hands are more confusingly designed, the round hour hand or even the scale is not luminously coated, and the entire dial is only the second and minute hands with luminous coating. In the darkness, only the minutes and the flickering second hand could be seen, and it was impossible to understand Casio's intentions.
At the bottom of the watch face is a long digital display window that can display the time or switch to the date, or display the current data for each function. The 4 corners of the fuselage use a long strip of toothed blocks that fit the curved shape of the fuselage as buttons, and use vivid colors to echo the color of the hour hand. The large area button feels more comfortable in the hand and is easy to press. The small horizontal and convex square on the right side of the dial connects the two buttons, and the adjusting handle with the pointer is designed in the middle. Sensors at the left and right ends with adjusting handle planes and bright little curvature buttons give the dial as a whole a slight octagonal clunky feel.
The back cover uses a 4-screw closed cover with a waterproof ring groove on the back of the fuselage, which is much better than the waterproof performance of the pure closed cover. Opening the rear cover, the contact surface between the movement and the fuselage and the back cover is designed with plastic shock pads, which can make the movement fit better around the fuselage and the back cover.
The movement uses models 376 or 375, and the approximate function of the LCD digital display is: 1 time and date switching. 2 The current altimeter in meters. 3 barometers. 4 dive depth gauge. 5 stopwatch. 6 alarm clocks. 100 meters waterproof without luminous lights.
Height Mode:
Barometric pressure mode:
Dive Depth Mode:
The arw320 has released a total of 3 color models, with orange hour hand on a black background with button matching, and yellow on a black background, with red hands on a pure black background with logo.
Although the design of the arw320 is relatively simple, the whole machine has a quite comfortable size, including sensors and handlebars with a diameter of only about 45mm, and the thickness is 10mm.
The ARW320 is supposed to be a simplified plastic version of the aw700, while Casio has differentiated the aw330 with a separate high-barometric function and the aw340 with depth gauge function after the arw320. Compared with casio's dive series developed separately for diving pressure in the 1990s, and the mountaineering series with a separate pressure sensor as the core, the arw320, which simplifies the combination of diving and air pressure functions, is much more realistic under the simple appearance of early exit.