Citizen J250 Instruction Manual page 7

The water-depth measurement function of this watch is not
certified as a measuring instrument by authorities.
DANGER
Be sure to use a specialized instrument along with this watch
when diving. Do not rely solely on this watch's function.
Do not use the water-depth measurement function of this
watch in the following cases:
• When judgments involving risks are required by the
WARNING
situation or for the actions.
• When the situation requires special treatments.
• When the power reserve is insufficient. (→ page 18)
Measurement results may be inaccurate in the following cases:
• When water depth changes rapidly or suddenly.
CAUTION
• When any foreign matter, dirt or debris is on or around the
water pressure sensor.
Safety precautions
5