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Overview

About Sigma Sport Onyx Pro Heart Rate Monitor Watch

Closeouts. Made for serious athletes, the Sigma Sport Onyx Pro heart rate monitor watch includes multiple features geared toward boosting your performance and maximizing results.

Specs

Specs about Sigma Sport Onyx Pro Heart Rate Monitor Watch

  • Weight: 1.2 oz.
  • Display: Digital
  • Movement: Quartz
  • Case dimensions (LxWxH): 50.8x44.4x12.7mm
  • Case material: Composite
  • Case back: Pressed
  • Bezel type: Fixed
  • Bezel width: 2.5mm
  • Bezel material: Composite
  • Strap/bracelet dimensions: 10" x19mm
  • Crystal type: Plexiglass
  • Band: Strap
  • Band material: Rubber
  • Clasp: Buckle
  • Calendar: Yes
  • Alarm: Yes
  • Chronograph: Yes
  • Laps: Yes
  • Timer: Yes
  • 12/24 hour: Yes
  • Heart rate monitor: Yes
  • Luminous: Back light
  • Made in China
  • Visit our Fitness Clothing Guide

Sizing

Marmot Men's Size Chart

XS S M L XL XXL XXXL
Chest 33 - 35 36 - 38 39 - 41 42 - 44 45 - 47 48 - 50 51 - 53
Neck 13.5 - 14 14.5 - 15 15.5 - 16 16.5 - 17 17.5 - 18 18.5 - 19 19.5 - 20
Sleeve 30 - 31 32 - 33 34 - 35 35 - 36 36 - 37 37 - 38 37 - 38
Waist 26 - 28 28 - 30 31 - 33 34 - 36 37 - 39 40 - 43 44 - 46
Hip 36 - 38 38 - 40 40 - 42 43 - 45 46 - 48 49 - 51 52 - 54

Note: Measurements in inches.

Reviews

Do you own this product? Write a review and help others with their buying decisions!

4.750000 5 Overall Rating: 4.8 Based on 4 reviews

Most Helpful 5-Star Review

Verified Buyer Reviewed by Explorer from Seattle, WA on Thursday, October 11, 2012
This thing is great for my purposes.

A criticism I've seen in some reviews (not here) is that this unit is hard to set if you don't read the manual... or, rather, that someone couldn't figure out the initial settings, but had refused to read the manual. The manual is straightforward, and starting f... Read More
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  • Verified Buyer Reviewed by Running with a heart from OKC on Monday, February 4, 2013
    Manual pretty self explanatory and layout of function very intuitive. Slowly building up to more complex features but this is my first monitor. Experienced users could quickly utilize myriad of functions.
  • Verified Buyer Reviewed by Bjorn from Minneapolis, MN on Thursday, December 13, 2012
    Very Useful
  • Verified Buyer Reviewed by Explorer from Seattle, WA on Thursday, October 11, 2012
    This thing is great for my purposes.

    A criticism I've seen in some reviews (not here) is that this unit is hard to set if you don't read the manual... or, rather, that someone couldn't figure out the initial settings, but had refused to read the manual. The manual is straightforward, and starting from the beginning will get you where you want to go.

    All in all, a great monitor, and at this price a better buy than some of the Polars I passed up to get it.
    • Best Uses: Spinning, Treadmill, Weight Loss
    • Cons: Manual Reading A Must
    • Describe Yourself: Gym Rat
    • Pros: Accurate, Compact Design, Easy To Use, Gives A Quick Reading, Versatile
    • Was this a gift?: No
  • Verified Buyer Reviewed by Old Guy from Kingston ON on Sunday, September 9, 2012
    Item can be as much of a training aid as you wish. Multiple levels and options as you progress. Measurement of the most simple routines will give you real data-meaning you not someone else 10 yrs. younger and 20 lbs lighter- to set realistic goals and identify a new plateau. The journey starts with the 1st step.
    • Best Uses: Running, Treadmill
    • Describe Yourself: Avid Athlete
    • Pros: Accurate, Compact Design, Easy To Use, Gives A Quick Reading, Versatile
    • Was this a gift?: No

Question & Answer

Questions about this product? Get answers from community and staff experts.

  • “Does this 'watch' actually show the time of day? ”
    Asked by Lumineer from utah on 3/1/2013 10:18:26 AM
    • The watch does have basic time keeping functions: Time,date and alarm.
      Answered on 3/1/2013 10:55:25 AM by Jack from Sierra Trading Post
  • “Does this show the amount of calories you have burned?”
    Asked by Lojo from Reno,NV on 2/10/2013 12:00:00 AM
    • It does not show how many calories burned.
      Answered on 2/13/2013 12:00:00 AM by Prod Spec Kevin from Sierra Trading Post
  • “Is this monitor rated for water resistance? Could it be used for swimming?”
    Asked by Interested Shopper from Unknown on 12/16/2012 12:00:00 AM
    • It is not waterproof.
      Answered on 12/17/2012 12:00:00 AM by Prod Spec Kevin from Sierra Trading Post
  • “does this watch communicate to treadmills/elipticals?”
    Asked by Alli from Denver on 12/9/2012 12:00:00 AM
    • It does not have this capability.
      Answered on 12/12/2012 12:00:00 AM by Prod Spec Kevin from Sierra Trading Post
  • “Does this watch have a pedometer?”
    Asked by Laura from North Carolina on 11/8/2012 12:00:00 AM
    • Item 4378W does not have a pedometer.
      Answered on 11/14/2012 12:00:00 AM by Product Specialist Lee from Sierra Trading Post

About Sigma Sport

With more than 25 years of experience, Sigma Sport is a German company specializing in bike computers, heart rate monitors, bike lights and sports watches. By investing in the absolute best technology and components, as well as testing all its products in-house to stringent standards, Sigma Sport bike computers are some of the most trusted in the cycling industry. All Sigma Sport heart rate monitors and sports watches are CE-approved and carefully inspected for accuracy and reliability. Track your performance and take your sport to new levels with a Sigma Sport bike computer or heart rate monitor.