Vivitar Smart Watch black，SMRTW20-BLK
Features:
Answer or dial calls directly from the watch
connected to a smartphone via Bluetooth
Built-in heart rate sensor that supports heart
rate & sleep quality monitoring Activity tracker has various sport modes to
record your fitness data
Watch is compatible with smartphones that uses
iOS 8.0/Android OS 4.4 or above
Notifications from the smartphone will show up
on the watch's display for convenience