Diamond 504 Sport durable Mechanical Timer Stopwatch Analog Stopwatch 1/10 second recorder 6h extended running time with 13 jewels

Specifications:
* 1/10 second recorder
* 30 seconds
* 15 minutes
* 13 jewels
* 6h extended running time
* Size: 77.4x55x14mm
* Unit Weight:120g

As the one of the time-honored mechanical stopwatch manufacturer, we has more than 40 years production experience, Diamond brand stopwatch mechanical series with proper structure, precise transmission and timing, the 13-jewels mechanical stopwatch can work perfectly between -10oC to +40oC.