Sharper Image SN005 - Manual (Page 11)

Auto Synchronization
the radio signal strength indicators to find a location where
the reception is strong. If the watch is too close to electrical
appliances, such as a TV, mobile phone or computer, they
may cause undesirable signal interference. A strong signal is
normally found close to the window. (See Figure 6.) In some
areas where the signal is poor, you may need to position and
rotate the watch until the best signal strength is obtained.
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Figure 4.
Blinking antenna icon (watch
attempting to synchronize).
Figure 5.
Synchronization and radio signal
strength indication.