Seiko ASTRON Handy Manual

5 6
Names of the parts
2
Crown
Minute hand
Sub-dial
AM/PM hand
Date
Button B
Hour hand
Button A
Second hand
Indicator hand
Sub-dial
(12-hour system)
Day hand (day of the week)

Position of each display may differ depending on the
model (design).

Seiko ASTRON Specifications

Frequency

frequency of crystal oscillator	32, 768 Hz
loss/gain (monthly rate)	±15 seconds

Operating Environment

operational temperature range	−10°C to +60°C
normal temperature range	5°C to 35°C

Power

power source	Secondary battery, 1 piece
duration of operation (fully charged)	Approximately 6 months
duration of operation (power save activated)	Approximately 2 years