The COSC uses 5 positions for certification


 

Guide to Strap Sizes

(Long end/Short end)

135/90mm fits wrists 8.2" - 8.66"

130/85mm fits wrists 7.8" - 8.2"

125/80mm fits wrists 7.5" - 7.8"

120/75mm fits wrists 7.0" - 7.5"

115/70mm fits wrists 6.7" - 7.0

110/65mm fits wrists 6.3" - 6.7"

105/60mm fits wrists 5.9" - 6.3"

 

 

 
 


 

 

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