Also available in Arctic

ALPHA is the worlds first strapless, continuous heart rate monitor you can wear on your wrist. It has been tested accurate even while you are running at
performance speeds of up to 20km/h (12mph)!
Before ALPHA, the most common way to get an accurate heart rate continuously while exercising was to wear a strap around your chest. With ALPHA's innovative
technology, the world of heart rate monitoring will be changed forever!
THE HIGH-PERFORMANCE HEART RATE SPORT WATCH ...for runners and cyclists
Before ALPHA, HR monitor choices fell short in terms of comfort and ease of use. Alpha's disruptive technology changes the game - and training for it too.
ACCURATE AT HIGH SPEEDS : Built for the high performance athlete
You are serious about your sport. You need a serious heart rate monitor. ALPHA keeps the beat using patented technology from the research labs at Philips Electronics.
COMFORT, FORM, FUNCTION : Take it anywhere, no set-up, always be ready for action
Totally unobtrusive, ALPHA delivers maximum performance in ultimate comfort. No chest strap means no worry it will slide down or chafe. Alpha's soft, stretchable silicone wrist band ensures a snug fit in a form factor that won't slow you down. So comfortable, you can wear it all day!
INTUITIVE
Only essential features and just two button navigation.
- Continuous heart rate display
- Timer
- User settable heart rate zones with visual and audible alerts
- Clock
- Data review (total exercise time; average heart rate; time "in zone")
TECHNOLOGICALLY ADVANCED
Two light beams and an electro-optical cell "sense" the volume of blood under your skin
Alpha is a true scientific breakthrough. Technology proven accurate at rest in medical use is now robust enough for sport. Sophisticated algorithms are applied to the pulse signal so that the heart's true rhythm can be detected even while running at performance speeds
OPTIMIZE WORK-OUTS
By controlling intensity level and working within the zone, maximize your efforts and perform at your peak. Heart rate training is the single, most effective tool that endurance athletes have to measure and control the intensity of their workouts in a way that will allow for long-term athletic performance, via improved recovery and reduced risk of injury.
ADDED DATA SUCH AS SPEED, GPS, DISTANCE & PACE
Alpha is compatible with the iPhone 4s and 5 and any other smart phones featuring Bluetooth Smart (4.0). Here is a list of apps that are able to connect with ALPHA on your iPhone:
Smartphone not included
How Does Alpha Work?
Two light beams and an electro-optical cell sense the volume of blood under your skin. Because the blood volume pulsates
in the rhythm of the heart, so does the signal from the electro-optical cell. This signal is processed by an advanced electronics
circuit and passed on to a highly specialized computer program that is embedded in the ALPHA. To date, the stumbling block
with this type of technology has been the arm movements while walking or running strongly interfere with the electro-optical
signal to the point that it is no longer possible to extract the heart rate from it.
In order to solve this problem the ALPHA has been provided with a separate motion detector. The computer program is able
to use the information from this detector to compensate for the disturbance that is generated in the electro-optical signal by
walking or running motions. As a result, the ALPHA can display an accurate heart rate even during motion-intense activities.
Features
- Continuous heart rate monitoring
- No uncomfortable chest strap
- Tested accurate at performance speeds
- Bluetooth Smart (4.0) technology connects with smartphones**
- User-settable heart rate zones
- Data review (total exercise time, average heart rate, time in zone)
- Exercise timer
- Water Resistant up to 30M (Heart Rate reading may not be accurate under water)
- Clock
** Alpha works with most fitness apps including MapMyRun, Wahoo, Endomondo, Runkeeper on iPhone 4s and 5.
Specs
- Silicone soft strap with secure snap latching system
- Negative dot-matrix LCD
- Tri-color LED heart rate zones
- Bluetooth Smart (4.0)
- Wireless transmitter
- USB charging dock with magnetic alignment
- Rechargeable lithium battery
What's In The Box
- USB charging dock with magnetic alignment
- Sports Watch
- User Guide
How Does Alpha Work?
Two light beams and an electro-optical cell sense the volume of blood under your skin. Because the blood volume pulsates
in the rhythm of the heart, so does the signal from the electro-optical cell. This signal is processed by an advanced electronics
circuit and passed on to a highly specialized computer program that is embedded in the ALPHA. To date, the stumbling block
with this type of technology has been the arm movements while walking or running strongly interfere with the electro-optical
signal to the point that it is no longer possible to extract the heart rate from it.
In order to solve this problem the ALPHA has been provided with a separate motion detector. The computer program is able
to use the information from this detector to compensate for the disturbance that is generated in the electro-optical signal by
walking or running motions. As a result, the ALPHA can display an accurate heart rate even during motion-intense activities.
Features
- Continuous heart rate monitoring
- No uncomfortable chest strap
- Tested accurate at performance speeds
- Bluetooth Smart (4.0) technology connects with smartphones**
- User-settable heart rate zones
- Data review (total exercise time, average heart rate, time in zone)
- Exercise timer
- Water Resistant up to 30M (Heart Rate reading may not be accurate under water)
- Clock
** Alpha works with most fitness apps including MapMyRun, Wahoo, Endomondo, Runkeeper on iPhone 4s and 5.
Specs
- Silicone soft strap with secure snap latching system
- Negative dot-matrix LCD
- Tri-color LED heart rate zones
- Bluetooth Smart (4.0)
- Wireless transmitter
- USB charging dock with magnetic alignment
- Rechargeable lithium battery
What's In The Box
- USB charging dock with magnetic alignment
- Sports Watch
- User Guide