Does "automatic" mean self-winding?

Automatic absolutely does mean, “self winding”. There’s no battery and no capacitor, as someone else claimed. As long as you wear the watch at least 10 hours a day then you should never have to hand wind it. Moving your arm throughout the day causes a rotor inside the watch to turn, which winds the watch and will not allow the watch to be overwound by the rotor. Once the main spring is fully wound, it provides anywhere from 40 to 120 hours of reserve spring power (depending on the brand/model), allowing you to place the watch on your nightstand while you sleep or even put it in a drawer over the weekend, and the watch will keep running until you put it back on again. If the watch is stationary for too long and all the energy from the main spring has run out, then put about 5 full turns on the crown, reset the date and time, put the watch on and you’re good to go. The self winding rotor will finish winding the watch for you and keep it wound indefinitely as long as you wear the watch at least 10 hours a day.

How do I stop the second hand to set the exact second? I pull the crown out to the second position, but the 2nd hand doesn't stop.

Absolutely do NOT put your watch on a magnet. You will magnetize your movement, and kill your accuracy. The 7S26 movement is non hacking, so you cannot stop the seconds hand for precise time setting. Look for something with a 4R35 or 4R36 movement if you want to set precise time.

whats the strap width? the page description says 17mm but i cant find one in that size :/

Lug-to-lug width for SNKL43: 18-mm. Measured it two days ago to order a NATO-style watch strap.

Wore my new watch for twelve hours, took it off for twelve hours and it stopped. Is this normal??

To me that is not normal. Sincethis movementis supposed to have an power reserve of 41 hours when fully wound spring. Eighter you are not moving your arm much or the watch is defective. I used mine black model now for about 2 weeks and it never stopped. I wore it now not for about 19 hours and it still runs. Keep in mind that the rotor on the back only turns at an steep 90 degree angle. The self winding weight will not turn on an shallow angle - so it winds only confidently with some wrist up and down movement. Otherwise this is the best watch ever for me. I ordered 2 when the

ASIN	B00E9K3JXW
ASIN	B00E9K3JXW
Age Range Description	Adult
Amazon Bestseller	#439,964 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #3,671 in Men's Wrist Watches
Band Color	Silver
Band Length	20 Centimeters
Band Material Type	Stainless Steel
Band Width	21.2 Millimeters
Batteries	1 AAA batteries required.
Brand Name	SEIKO
Case Diameter	37 Millimeters
Case Thickness	10.3 Millimeters
Clasp Type	Buckle
Closure Type	Buckle
Crystal	Hardlex Crystal Glass
Customer Reviews	4.2 4.2 out of 5 stars (320)
Date First Available	August 8, 2012
Dial Color	navy
Display	Analog
Face Style	Solid
Global Trade Identification Number	00029665217875
Included Components	Band
Is Discontinued By Manufacturer	No
Item Type Name	watch
Item Weight	110 Grams
Item model number	SNK357
Manufacturer	Seiko 5
Manufacturer	Seiko 5
Model Number	SNK357
Pattern	Solid
Product Dimensions	12.45 x 9.91 x 5.08 cm; 110 g
Series Number	357
Shape	Round
Style Name	Bracelet Type
UPC	029665217875
Watch Movement Type	Automatic
Water Resistance Depth	30 Meters
Water Resistance Level	Waterproof

セイコー 腕時計 SEIKO 5 自動巻き 海外モデル SNK357K1 メンズ [逆輸入品]

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セイコー腕時計 SEIKO 5 自動巻き海外モデル SNK357K1 メンズ [逆輸入品]