Page 2 - To check the movement number
1 English To check the movement number A case number—4 alphanumeric characters and 6 or more alphanumeric characters—is engraved on the case back. (Figure on the right)The first 4 characters of the case number represent the movement number of the watch. In the example on the right, “ ” is the moveme...
Page 3 - Safety precautions — IMPORTANT; DANGER; WARNING; CAUTION
2 Safety precautions — IMPORTANT This manual contains instructions that should be strictly followed at all times not only for optimal use, but to prevent any injuries to yourself, other persons or property. We encourage you to read the entire booklet (especially, pages 22 to 31 ) and understand the ...
Page 4 - Safety precautions
3 English ■ Important instructions are categorized and depicted in this manual as follows: (Following symbols are examples of Pictograms.) Warning (caution) symbol followed by prohibited matters. Warning (caution) symbol followed by instructions that should be followed or precautions that should be ...
Page 5 - Diving with the watch; Precautions to be taken when diving
4 PROHIBITED Do not use this watch while diving when... • Do not use your watch while diving when the watch stops or exhibits any abnormal operation. CAUTION Diving with the watch • Persons using the diver’s watch are strongly recommended to receive proper instruction and training pertaining to divi...
Page 6 - Before diving; During diving; After diving
5 English CAUTION Before diving • Check items below before diving - Make sure that the watch is fully wound. - Make sure that the watch is running correctly (check the movements of the time/calendar/ second hand) - Make sure that the crown is pushed all the way in and locked in place. - Make sure th...
Page 7 - Contents
6 Contents Characteristics of Mechanical watches . . . . . . . . . . . . . . . . . . . . . 7 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Before using . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Comp...
Page 8 - Characteristics of Mechanical watches; About time accuracy of mechanical watches; Winding amount of the mainspring
7 English Characteristics of Mechanical watches About time accuracy of mechanical watches The time accuracy described on this instruction manual is the static accuracy at normal temperature. The accuracy of mechanical watches may get out of the described range depending on the following three usage ...
Page 9 - Maintenance
8 Characteristics of Mechanical watches Usage environment (temperature, magnetism, impact, etc.) • Metal parts are used for the part for keeping accuracy in mechanical watch. The accuracy varies affected by their thermal expansion and contraction. • Metal parts are used in mechanical watches. Magnet...
Page 10 - Water-resistant to 200m; Features
9 English ■ Water-resistant to 200m • This watch is a scuba diver’s watch (water-resistant to 200m). You can use it for scuba diving with air tanks, but must not be used in a helium-enriched atmosphere (e.g. saturation diving). ■ Automatic winding movement • A automatic winding movement is employed ...
Page 11 - Before using
10 Band adjustment We recommend seeking the assistance of an experienced watch technician for sizing of your watch. If adjustment is not done correctly, the bracelet may unexpectedly become detached leading to loss of your watch or injury.Consult an authorized service center. Protective stickers Be ...
Page 12 - How to use a specially designed crown; Unlock
11 English Before using How to use a specially designed crown Unlock the crown prior to operate your watch. Unlock Lock Screw down crown Rotate the crown counterclockwise until it releases from the case. Push the crown in to the case. With gentle pressure towards the case, rotate the crown clockwise...
Page 13 - Requests and cautions regarding this watch; (Mechanical watch with automatic winding function)
12 Requests and cautions regarding this watch (Mechanical watch with automatic winding function) • Although the mainspring will be wound automatically when the watch is worn on the wrist, the mainspring will wind down after about 2 days and the watch will stop if it is removed from the wrist. • Make...
Page 14 - Component identification
13 English Component identification • The illustrations shown in this manual may differ from the actual watch you have purchased. Minute hand Rotating bezel Hour hand Second hand Crown Date Day
Page 15 - Mainspring; About winding the mainspring
14 Mainspring Note: A screw down locking crown is employed to enhance the water resistance of the watch. When operating the crown, first turn it to the left to disengage the screw lock. Once you have finished operating the crown, always make sure to return the crown to the normal position and then t...
Page 16 - Winding the mainspring manually
15 English Mainspring Winding the mainspring manually Turn the crown to the right (clockwise) in position . • When the watch stops, turning the crown about 40 times will wind the mainspring fully. • When the mainspring is wound fully, turning the crown further does not damage the mainspring. Crown
Page 17 - Push the crown in to position; Setting the time and calendar; Setting the time
16 1 Pull the crown out to position . 2 Rotate the crown to adjust the time. • Change of date indication shows it just became AM. Set the time to ensure proper AM or PM time is set. • Day changes a little later than the change of the date. 3 Push the crown in to position to finish the procedure. Set...
Page 19 - Pull the crown out to position
18 Setting the time and calendar 1 Pull the crown out to position . 2 Rotate the crown to set the date and day. • The date changes if the crown is turned to the left.• The day changes if the crown is turned to the right. The day is alternately displayed in two languages. Once the day has been set to...
Page 21 - Using the rotating bezel
20 Using the rotating bezel You can see the elapsed time from a certain moment, or remaining time to a decided moment, easily by using the rotating bezel.• The rotating bezel moves counter-clockwise only. It will not move to the other way (clockwise) to prevent accident. Finding the elapsed time Ela...
Page 22 - Finding the remaining time; You can read the remaining time between
21 English Using the rotating bezel Finding the remaining time 1 Set ▼ on the rotating bezel to the position decided from adding the target time with the current time. • In the illustration, the target time is 20 min. and is added to the current time. 2 You can read the remaining time between the po...
Page 23 - Water Resistance; Water resistance
22 Name Indication Specification Dial or Case back Water-resistant watch for scuba diving DIVER’S 200 m 200m water resistant WARNING Water Resistance • Diver’s water-resistant watches can be used only for scuba diving using an air tank and not for saturation diving using a helium gas tank. • Water r...
Page 24 - OK
23 English Water resistance Water-related use Minor exposure to water (washing face, rain, etc.) Swimming and general washing work Skin diving, marine sports Scuba diving using an air tank Saturation diving using helium gas Operate the crown or button when the watch is wet OK OK OK OK NO NO • The pa...
Page 25 - To Avoid Injury; Precautionary items and usage limitations
24 CAUTION To Avoid Injury • Be particularly careful when wearing your watch while holding a small child, to avoid injury.• Be particularly careful when engaged in strenuous exercise or work, to avoid injury to yourself and others. • Do not wear your watch while in a sauna or other location where yo...
Page 26 - Precautions
25 English Precautionary items and usage limitations CAUTION Precautions • Always use the watch with the crown pushed in (normal position). If the crown is of the screw lock-type, make sure it is securely locked. • Do not operate the crown or any push buttons when the watch is wet. Water may enter t...
Page 27 - When Wearing Your Watch
26 Precautionary items and usage limitations CAUTION When Wearing Your Watch <Band> • Leather bands and rubber (urethane) bands will deteriorate over time due to perspiration dirt. Because of the natural materials, leather band will be worn, deformed, and discolored over time. It is recommende...
Page 30 - Always Keep Your Watch Clean
29 English Precautionary items and usage limitations CAUTION Always Keep Your Watch Clean • Rotate the crown while it is pressed in fully and press the buttons periodically so they do not become stuck due to accumulations of foreign matter. • The case and band of the watch come into direct contact w...
Page 31 - Caring for Your Watch
30 Precautionary items and usage limitations Caring for Your Watch • Wipe any dirt or moisture such as perspiration from the case and crystal with a soft cloth.• For metallic, plastic or synthetic rubber (polyurethane) band, clean it with soap and a soft toothbrush. Be sure to thoroughly rinse the b...
Page 32 -
31 English Precautionary items and usage limitations <When Luminous Paint is used for your watch> The paint on the dial and hands helps you with reading the time in a dark place. The luminous paint stores light (daylight or artificial light) and glows in a dark place. It is free from any radio...
Page 33 - Specifications
32 Specifications Model 8203·8204 Type Mechanical watch (automatic winding) Timekeeping accuracy [8203]Average daily difference of -10 to +20 seconds [8204]Average daily difference of -20 to +40 seconds (the timekeeping accuracy range may be exceeded depending on the conditions of use) Display funct...
