Seiko W850A, Technical Manual

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PARTS CATALOGUE
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TECHNICAL GUIDE
Cal. W850A, W851A
Cal. W853A, W854A
Cal. No.
Item
W850A, W851A, W853A, W854A
(x 1.0) The illustrations refer to Cal. W853A.
Module
Module size Outside diameter ø29.0 mm
– Casing diameter
Height 6.0 mm (Including the battery portion)
Display medium Nematic Liquid Crystal, FEM (Field Effect Mode)
Liquid crystal driving system
Multiplex driving system
Display system • Time/calendar display
• Stopwatch display (Up to 9 hours, 59 minutes and 59.99 seconds in
1/100 seconds)
• Alarm display (5-channel daily alarm)
• Timer display (Two types of countdown timer: Preset timer with 10
preset times and 10-hour adjustable timer)
• World time display (38 cities)
Additional mechanism • Selection of a desired mode in the menu display
• Changeover between the normal and enlarged displays
• Quick digits moving function
• Graphic display, scroll display and motion graphic demonstration
function
• Auto illumination function
• Electroluminescent panel
• Battery life indicator
• Sound demonstration
• Changeover between 12- and 24-hour indications
Loss/gain Monthly rate at normal temperature range: less than 20 seconds
Regulation system
Nil
Measuring gate by quartz tester Any gate can be used.
Battery SEIKO CR2025, Sony CR2025, Matsushita CR2025
Battery life is approximately 2 years.
Voltage: 3.0 V
[SPECIFICATIONS]