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The movement is equipped with 13 gems
The watch machine can be used at -10°C~+40°C
Normally maintained within °C temperature range
The mechanical stopwatch belongs to the category of mechanical timing instruments
The watch machine adopts stainless steel spring, single metal light balance wheel, nickel base alloy hairspring and anchor vertical mechanism
Mechanical Stop Watch Sports Chronograph Running Timer Handheld Stopwatch Features: The mechanical stopwatch belongs to the category of mechanical timing instruments The watch machine adopts stainless steel spring, single metal light balance wheel, nickel base alloy hairspring and anchor vertical mechanism The movement is equipped with 13 gems The watch machine can be used at -10°C~+40°C Normally maintained within °C temperature range Purchase Options: SXJ504 (30 seconds / circle / no pause) SXJ505 (60 seconds / circle / no pause) SXJ803 (30 seconds / circle / with a pause) SXJ806 (60 seconds / circle / with a pause) Includes: 1 x Mechanical Stop Watch Note: Random delivery of two styles as picture shows, if you mind, pls don't buy, thanks! If the watch cannot work well, pls try to loose the mainspring, it maybe the mainspring is screwed too tightly, causing it to jam.