Y5 Smart Watch Bracelet - Heart Rate Monitor, IP67 Waterproof, Color Screen - RedKey Features...High sensitivity and strong anti-interference. Anti-tracking, anti-eavesdropping, anti-sneak shot.Suitable for work environment, family environment, public places, specific occasions.A variety of radio wave detection, anti-eavesdropping, anti-positioning, anti-monitoring, anti-tracking.High-speed chip f..