I have always wondered what is safe... sometimes my heart rate goes high and I get scared while working out.
A waterproof fitness tracker watch with wrist heart rate monitor and a colour touchscreen. Customise yours with colourful wristbands. Read more.
Garmin Unisex Forerunner 235 Gps Heart Rate Monitor Watch
Garmin Forerunner 35 GPS Watch + Heart Rate Monitor
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
FLIP is the latest in the wearable biometric tech craze, but quite different from fitness bands and smartwatches.
http://www.babyboyeasteroutfits.com/category/fetal-doppler/ Hi Bebe Fetal Doppler Heart Rate Monitor – BT-2O0
BPULS Bluetooth Heart Rate Hearphone Wireless Sweatproof Hifi Sport Headset with Built-In APP Monitor Running Exercise (Black) *** Read more at the image link.
Use a Heart Rate Monitor and Find Your Threshold | ACTIVE
Activity tracker provides constant feedback on exercise, heart rate, and calories burned while syncing wirelessly to most smartphones