You can set an alarm to alert you when you are training outside your zone limits
Stop watch
Basic time keeping: Time, date and alarm
Backlight
Wireless heart rate monitor with an analogue chest strap transmitter and a wrist watch receiver
Works with gym equipment that can pick up heart rate monitor signals and display your heart rate
Battery for chest strap transmitter self-replaceable. Battery for the wrist watch unit should be replaced by qualified personnel (e.g. a local jewelry store)
Mounting bracket for attaching the wrist watch unit to treadmills or bicycle
Average heart rate, maximum heart rate of exercise session
Being able to set your own heart rate training limits is one of the more important aspects of heart rate monitoring. The HR-100C lets you do that. The user manual also provides helpful suggestions on what limits you should set for yourself, and how long and often you should be exercising, given your own circumstances.
The Omron HR-100C has a number of small features which individually may not seem to be very significant, but collectively as a whole, they add up to a nice heart rate monitor package.
Summary
The Omron HR-100C is a simple and popular heart rate monitor with not too many bells and whistles. It should meet the needs of many beginning heart rate monitor users. In fact
it is one of the best selling heart rate monitors on Amazon.