Aiming for marathon success
The marathon function of ONYX Pro enables a runner to accurately check and evaluate the heart rate and split times during a marathon.
ONYX Heart Rate Monitor -
What's new?
the digitally coded range from Sigma Sport®
DIGICODE – Interference-free transmission!
All models with digicode feature digitally coded transmission.
A PROFESSIONAL WHEN IT COMES TO TRAINING
The digital coded ONYX PRO with preset and individually adaptable endurance and interval training ranges is new to the marketplace. The training zones can either be calculated in line with IAT (individual anaerobic threshold) or maximum heart rate.

The detailed analysis of the training units is ideal for all professional and ambitious sportspeople. A magnification function for improved readability and a new kind of navigation for intuitive menu guidance are innovations that characterise this Heart Rate Monitor. 7 memory locations, a lap counter (50 laps with average and maximum heart rate indications),
a light and a battery change compartment round off the features of this precise heart rate watch.

A real professional.
Large view
Product demo
Press
Roadbike 07/2007
“The ONYX PRO is a very good training tool with top-equipping, informative display- but also some weaknesses. Unbeatable however is it’s price-performance.”
 
AKTIV LAUFEN 05/2007
“The Onyx Pro is an all around successful heart-rate-monitor. Particularly well done is the extremely esay and clear operation. The Onyx Pro is to be recommended to every advanced runner.”