Seiko 5 SNKL15 Stainless Steel Silver Dial Automatic Modern Design Men's Watch,

Welcome to Toward the Future. We ship authentic products from Japan. Please enjoy shopping with peace of mind! I am sure you will find a great watch. Thank you. Japanese made 21 jewel automatic movement (caliber 7S26). Stainless steel case and band with push-button deployment clasp. Hardlex mineral crystal, day/date display, Spanish language options, luminous hands. Case size: 38mm diameter, 10.5mm thickness Water resistant - 30M, transparent screw-down case back. SEIKO 5 - meaning "5." A brilliant marketer had an idea in the 1970s: To be a SEIKO 5, a watch needed to have the following five attributes (hence the name SEIKO 5): 1. Automatic, 2. Water-resistant, 3. Shock-resistant, 4. Date, 5. Day. Note that the SEIKO 5 is actually a SEIKO 4. If the "Day" function is omitted, the caliber 7S25 is used. The only difference from the commonly seen 7S26 is the omission of the day wheel. Reissues of the SEIKO 5 Sports often use the 7S36 caliber. The 7S36 is similar to the most popular 7S26, but features 23 jewels as opposed to the 7S26's 21 jewels. All of these movements beat at a rate of 21,600 bph (beats per hour) or 6 bps (beats per second). For comparison, the ETA 2824-2 beats at 28,800 bph or 8 bps. The Miyota 82xx beats at 21'600bph. Why mention these three movements? Because they are probably They are found in 80% of all inexpensive automatic watches. Their market share is huge, although recently (2006) the share of inexpensive Chinese-made automatic movements has increased. An automatic watch (also called a self-winding watch) is a mechanical watch, usually with a balance wheel escapement, that is wound by the movement of the wearer's arm rather than being manually wound each day. While quartz watches are powered by electricity, mechanical watches are powered by a mainspring and must be wound to keep time.