I have always wondered what is safe... sometimes my heart rate goes high and I get scared while working out.
Garmin Forerunner 35 GPS Watch + Heart Rate Monitor
A waterproof fitness tracker watch with wrist heart rate monitor and a colour touchscreen. Customise yours with colourful wristbands. Read more.
Fitbit - Resting Heart Rate Infographic
http://www.babyboyeasteroutfits.com/category/fetal-doppler/ Hi Bebe Fetal Doppler Heart Rate Monitor – BT-2O0
Use a Heart Rate Monitor and Find Your Threshold | ACTIVE
Fitbit Charge HR™ Wireless Heart Rate + Activity Wristband After much reading up on the various Fitbit products, this is my personal must have, the Fitbit Charge HR in plum. #findyourfit
Polar FT60 heart rate monitor
FLIP is the latest in the wearable biometric tech craze, but quite different from fitness bands and smartwatches.
Garmin Unisex Forerunner 235 Gps Heart Rate Monitor Watch