SEIKO 5 SPORTS SELF-WINDING AUTOMATIC WATCH

New price:$118.95

Used Price:Not Available


Features:
Japan 23 Jewels (7S36) Automatic Self-Dissolution Movement Stainless Steel Case with Band and Double-Over-security
Day / date display with Spanish option, luminous markers, screw down See-Thru Box, water-resistant – 100
: : SEIKO 5 – the meaning of “5″ A great seller had the idea in the 70ies: to be a SEIKO 5, the clock should have the following five (5) the attributes (hence the name Seika 5): 1. Automatic, 2. Water resistant, 3. Shock resistant, 4. Date, 5. Note that some Seika Day 5’s are in fact Seika 4, if the “Day” function is omitted, use the 7S25 caliber. The only difference to the normally found 7S26 is the omission of the date of the conference. Also re-issues of SEIKO 5 Sports often use the 7S36 caliber. Again the 7S36 is similar to the most popular 7S26, however, features 23 Jewels as opposed to the 21 Jewels in the 7S26. Note that all these movements beat at a rate of 21′600 BPH (beats per minute) or 6 bps (beats per second). By comparison, an ETA 2824-2 beats at 28,800 BPH or 8 bps VIb. A Miyota 82xx time 21′600 BPH. Why do I mention these three movements? Because they are probably in 80% of all automatic watches at low cost. The market share that is huge, however, challenged these days (2006) for an increasing share of China was less automatic movements An automatic watch (also known as self-monitoring of dissolution) is a mechanical watch mainly an account of the escape wheel the wound is the movement of the user’s arm, instead of being dissolved by hand every day. Whereas a quartz watch is powered by electricity, a mechanical watch is powered by an engine that should back the clock to keep time .

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