Monitor your heart rate with Omron's HR-100C. View larger.

Omron includes a chest transmitter belt with the wristwatch-style monitor. This transmitter sends data to the receiver on your wrist at a distance up to 98 feet (30 meters). The HR-100C is built with a backlight function for exercising after nightfall, and it also displays time of day and a daily reminder alarm feature. Also included is a mounting bracket that makes it easy to attach the watch receiver to most treadmills and bicycles and a soft, zippered storage case.

What's in the Box
HR-100C hear rate monitor, chest transmitter, mounting bracket, and zippered storage case.

Compare Omron Fitness Monitors
	HB-400	HB-500	HBF-306	HR-100
Measurement	Body fat percentage Body mass index Weight	Body fat percentage Visceral fat level Skeletal muscle percentage Resting metabolism Body mass index Weight	Body fat percentage Body mass index	Heart rate and pulse
Product Placement	Flat level floor	Flat level floor	Hold in front of body	Watch on wrist Transmitter around chest
Memory	4 person profile with previous reading	4 person profile 1/7/30/90 day(s) memory	9 person profile	None
Warranty	1 Year	1 Year	1 Year	1 Year
Batteries	4 "AA" (included)	4 "AA" (included)	2 "AA" (included)	2 CR2032 3 volt (included)
Estimated Battery Life	Approx. 1 year (when used four times a day)	Approx. 1 year (when used four times a day)	Approx. 1 year (when used four times a day)	Approx. 1 year (varies depending on storage and use)

Q&A - Fitness Monitors

What is the Bioelectrical Impedance Method?
Bioelectrical Impedance (BI) is considered one of the most accurate and accessible methods of screening body fat. Muscles, blood vessels and bones are body tissues having a high water content that conduct electricity easily. Body fat is tissue that has little electric conductivity. The monitor sends an extremely weak electrical current through your body to determine the amount of fat tissue. The weak electrical current is not felt while operating the Body Fat Analyzer. The monitor is calculated by a formula that includes five factors; electric resistance, height, weight, age and gender.
What is visceral fat?
Visceral fat is located around the organs. Too much visceral fat is thought to be closely linked to increased level of fat in the bloodstream, which can lead to common conditions such as high cholesterol, cardiovascular disease and diabetes. Sedentary life style causes excess visceral fat, and exercise can reduce it quicker than subcutaneous fat (fat located under skin).
What is resting metabolism?
Resting metabolism is the energy to maintain vital functions and it counts 60 to 70% of total energy consumption. Knowing your resting metabolism can help your dietplan. If you can increase daily activity while keeping food intake at resting metabolism level, you can lose weight.
What is skeletal muscle?
Skeletal muscle is muscle attached to the bones that is used to move the body. If you do weight loss without exercise, you may lose skeletal muscle. Skeletal muscle is important to maintain your resting metabolism as well as your functionality. Monitoring skeletal muscle during weight loss is key to avoid weight rebound in the future.

The Indiglo night-light uniformly lights the surface of the watch dial using patented blue electroluminescent lighting technology. It uses less battery power than most other watch illumination systems, enabling your watch battery to last longer. The watch is water resistant to 30 meters (100 feet), which protects it from rain and water splashes. All Timex heart rate monitor sensors have batteries that can be replaced by consumers without requiring them to be returned to the manufacturer.

• 100-hour chronograph with lap/split
• On-the-fly recall of lap or split
• Training log stores workouts by date, with best lap, average lap, and total segment time
• Total run format/synchro timer maintains total activity time (less time paused during workout) and overall running time
• Automatic interval repetition counter
• Forward or backward setting
• Built-in setting reminders
• Top pusher for easy access to lap and split

The Indiglo night-light uniformly lights the surface of the watch dial using patented blue electroluminescent lighting technology. It uses less battery power than most other watch illumination systems, enabling your watch battery to last longer. The Night Mode feature allows you to illuminate the Indiglo night-light for 3 seconds with any button press, regardless of the mode or function.

The monitor has a programmable heart rate zone with audible and visual alarms to alert you when you get out of zone, plus a settable alarm if you have a maximum rate you should not exceed. Made from durable plastic and fully water-resistant, the device also features regular watch functions, plus a 100-hour stopwatch and countdown timer. It comes with a complete walking and exercise guide and one-year warranty.

About Reebok
Reebok's United Kingdom-based ancestor company was founded for one of the best reasons possible: athletes wanted to run faster. So, in the 1890s, Joseph William Foster made some of the first known running shoes with spikes in them. By 1895, he was in business making shoes by hand for top runners; and before long his fledgling company, J.W. Foster and Sons, developed an international clientele of distinguished athletes. In 1958, two of the founder's grandsons started a companion company that came to be known as Reebok, named for an African gazelle.

It incorporates the Timex Flix system, which activates the Indiglo night-light with a simple flick of your wrist. To activate FLIX, put the watch into Night-Mode by pressing and holding the Indiglo night-light button 3 seconds until it beeps. With the watch in Night-Mode, a forward "flick" of the wrist with a sharp "stop" will activate the Indiglo night-light for three seconds.

The Indiglo night-light uniformly lights the surface of the watch dial using patented blue electroluminescent lighting technology. It uses less battery power than most other watch illumination systems, enabling your watch battery to last longer. The Night Mode feature allows you to illuminate the Indiglo night-light for 3 seconds with any button press, regardless of the mode or function.

An automatic (or self-winding) watch is fitted with a device (rotor) that automatically winds the spring by using the force of gravity. It needs no battery, but it will stop if you have been physically inactive for an extended period of time--as long as you're moving, the watch will stay powered. Swiss watchmaker Abraham-Louis Perrelet invented the self-winding mechanism in 1770. It worked on the same principle as a modern pedometer, and was designed to wind as the owner walked.

Tritnite is a luminous material with an extended glow exclusively developed by Invicta in Switzerland and added to their timepiece hands and markers. When exposed to regular daylight, it will hold its glow for about 20 hours.

About Invicta
Latin for "invincible," Invicta was founded in La Chaux-de-fonds, Switzerland in 1837 by Raphael Picard, who believed that fine Swiss timepieces could be offered at modest prices. For more than a century, the company has created distinctive manual and automatic-winding pieces. In 1991, descendants of the Picard family reaffirmed the company's founding principle, and the invigorated Invicta has been growing ever since with one of the most widely diverse collections of precise Swiss timepieces on the market.

• Center Stone: Oval-shaped peridot

About Seiko
In 1877, at the age of 18, Kintaro Hattori set up business repairing the Western-style clocks that were becoming increasingly popular in Japan. By 1892, Hattori was manufacturing his own clocks in a factory he called Seikosha, from the words "seiko" meaning "exquisite," "success," or "miniature," and "sha" meaning "house." The company grew and prospered, producing its first wristwatch in 1913 and launching the Seiko brand in 1924. Technological innovation has always been a driving force in the company's history. Key milestones include Seiko's introduction of the world's first quartz watch in 1969, and its successful launch, in 1988, of the Kinetic, the world's first battery-free watch with quartz accuracy. Recognized for its technological excellence, Seiko has provided timekeeping services for the Olympic Games and the World Cup Soccer Championships. Today, the Seiko brand continues to stand for state-of-the-art technology, as well as superior quality and refined design.

Polar's coded technology ensures that the user picks up only their heart signal, and not the signal of another heart rate monitor nearby. With millions of HRMs in use today, there's a good chance that someone working out next to you may also have one on. Interference from any other HRM is now eliminated and an accurate signal is ensured.

About Polar
The first EKG accurate wireless heart rate monitor was invented by Polar back in 1977 as a training tool for the Finnish National Cross Country Ski Team. The concept of "intensity training" by heart rate swept the athletic world in the eighties. By the 1990s, individuals were looking to heart rate monitors not only for performance training needs, but also for achieving everyday fitness goals. Today, the same concept of heart rate training is being used by world-class athletes as well as everyday people trying to lose weight. Polar is the leading brand among consumers, coaches, and personal trainers worldwide and the company is committed to not only producing the best products, but also being the leading educator on the benefits of heart rate based exercise.

Just press and hold the silver contact button with your fingertips for your heart rate with the A4.

By itself, the A4 makes a good training aid, but it's particularly valuable when paired with any Polar transmitter, as the two together offer continuous heart rate monitoring. As a result, you'll know what your heart rate is throughout your workout, rather than only when you press the button. Plus, the A4 offers all the standard sports watch functions, including an alarm, calendar, stopwatch, backlight, and target zone alarms. The watch also offers a calorie counting function and exercise file record when combined with a chest strap transmitter (not included). Finally, the watch comes with a zippered black nylon carrying case for protection.

About Polar
The first EKG accurate wireless heart rate monitor was invented by Polar back in 1977 as a training tool for the Finnish National Cross Country Ski Team. The concept of "intensity training" by heart rate swept the athletic world in the eighties. By the 1990s, individuals were looking to heart rate monitors not only for performance training needs, but also for achieving everyday fitness goals. Today, the same concept of heart rate training is being used by world-class athletes as well as everyday people trying to lose weight. Polar is the leading brand among consumers, coaches, and personal trainers worldwide and the company is committed to not only producing the best products, but also being the leading educator on the benefits of heart rate based exercise.

• 100-hour chronograph with lap and split, either in large digits
• 30-lap memory with average heart rate per laps
• 100-hour, 3-mode countdown timer
• Alarm with 5-minute backup
• Month/day/date display with 12/24-hour time
• 2-year battery life

The Indiglo night-light uniformly lights the surface of the watch dial using patented blue electroluminescent lighting technology. It uses less battery power than most other watch illumination systems, enabling your watch battery to last longer. The Night Mode feature allows you to illuminate the Indiglo night-light for 3 seconds with any button press, regardless of the mode or function. The watch is water resistant to 50 meters (165 feet)--suitable for swimming but not for diving. All Timex heart rate monitor sensors have batteries that can be replaced by consumers without requiring them to be returned to the manufacturer.

• 100-hour chronograph with lap/split
• On-the-fly recall of lap or split
• Training log stores workouts by date, with best lap, average lap, and total segment time
• Total run format/synchro timer maintains total activity time (less time paused during workout) and overall running time
• Automatic interval repetition counter
• Forward or backward setting
• Built-in setting reminders
• Top pusher for easy access to lap and split

The Indiglo night-light uniformly lights the surface of the watch dial using patented blue electroluminescent lighting technology. It uses less battery power than most other watch illumination systems, enabling your watch battery to last longer. The Night Mode feature allows you to illuminate the Indiglo night-light for 3 seconds with any button press, regardless of the mode or function.