Water Resistance; Magnetic Resistance - Seiko 3B51 Instructions Manual

Water Resistance
Refer the table below for the description of each degree of
water resistant performance of your watch before using.
（Refer to " P.109 "）
Indication on the case back
No indication
Non-water resistance
WATER RESISTANT Water resistance for everyday life
6
WATER RESISTANT
Water resistance for everyday life at
5 barometric pressures
5 BAR
WATER RESISTANT
Water resistance for everyday life at
10(20) barometric pressures.
10（20）BAR
110
Magnetic resistance
Aff ected by nearby magnetism,
a watch may temporarily gain or lose time or stop operating.
Indication on the case back
Keep the watch more than 10 cm away from
No indication
magnetic products.
Keep the watch more than 5 cm away from
magnetic products. (JIS level-1 standard)
Keep the watch more than 1 cm away from
6
magnetic products. (JIS level-2 standard)
If the watch becomes magnetized and its accuracy deteriorates to an extent exceeding the specifi ed
rate under normal use, the watch needs to be demagnetized. In this case, you will be charged for
demagnetization and accuracy readjustment even if it happens within the guarantee period.
The reason why watch is aff ected by magnetism
The built-in balance spring is provided with a magnet, which may be infl uenced by a strong external
magnetic fi eld.
112
Water resistant performance
Condition of use
Condition of use
Avoid drops of water or sweat
The watch withstands accidental
contact with water in everyday life.
The watch is suitable for sports such as swimming.
The watch is suitable for diving not using an air cylinder.
Examples of common magnetic products that may aff ect watches
AC adapter
Cellular phone
(speaker)
Magnetic Portable radio
cooking device (speaker)
WARNING
Not suitable for swimming
Bag
AC-powered
(with magnet buckle)
shaver
Magnetic Magnetic
necklace health pillow
6
111
6
113