Dfit Heart Rate Bracelet. Pedometer, heart rate monitor, sleep monitor and more; Touch buttons are hidden in the time following.
D21 DFit Smart Bracelet Heart Rate Monitor Fitness Tracker from www.geekbuying.com
Get lots of smart functionality: Nrf51822 (cortex m0 16mhz) memory: The devices are designed for monitoring physiological parameters i.e.
D21 DFit Smart Bracelet Heart Rate Monitor Fitness Tracker
10 heart rate monitor wristband review: Green light heart rate sensor: Smart sports wristband with ip66 waterproof rating Nrf51822 (cortex m0 16mhz) memory:
