Citizen J250 Instruction Manual page 23

Water depth measurement
Items to check before water depth measurement
• Commercial specialized devices for diving are prepared. (→ page 4)
• The band of the watch is not worn or damaged.
• No foreign objects stick around the water pressure sensor or water sensor.
• The crown and buttons are screwed down. (→ page 11)
• The power reserve is in level "2" or higher. (→ page 18)
• Understand the rapid ascent warning and corresponding alarm. (→ page 24)
• The watch is not wet. (→ page 32)
• The hand does not point to "OVER". (→ page 32)
• The time indication is correct. (→ page 34)
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