The 32.768 kHz Crystal family has proven track record in thousands of applications worldwide.
Wearables and Activity Bands
IoT, Smart Pens
Industrial Applications, system on chip SOC
Health Care devices
Automotive grade devices are ideal for:
Emergency Call Units, Remote Keyless Entry systems
Detailed information for Low Frequency Oscillators
http://www.microcrystal.com/index.php/products/quarz-crystal-32768