RHYTHM M440-QXEZ, User Manual

Page: 19 / 20

19
Time accuracy
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When the standard radio waves are received successfully, time accuracy is as below:
Second hand Less than ±1 second
Time accuracyHour and minute hands Less than ±3° against the scale
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When the standard radio waves are not received successfully:
Average monthly error ± 20 seconds (at the room temperature)
Ambient temperature
–10°C to +50°C
Battery
Two 1.5V “C” size alkaline batteries (JIS LR14)
Practical battery life
Approximately 1 year
Specifications
Number of times of adjusting the time automatically by reception of radio waves
Number of times of automatic reception of radio waves fluctuates from once a day (minimum)
to twelve times a day (maximum) depending on reception status of radio waves.
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Within 72 hours after successful reception of radio waves
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Other case
12 times a day
Minimum:Once a day
Maximum:Three times a day
Number of times of reception
※
Lifetime of batteries installed at the time of shipment from the factory may be shorter than that of batteries
described on the specifications.
※
Lifetime of batteries is based on that the second hand was stopped for seven hours per day by mean oflight
sensor under normal reception of the Japan standard radio wave signal.
※
The specifications of the clock may be modified without any notice.
•Specifications are subject to change without notice.