Functions: Shock Resistance, Solar Power, Full-Auto LED Lights (Super Illuminator), Alarm, Stopwatch, Countdown Timer, World Time (all), Date/month Display Swapping, Multi-lingual Day of Week Display, 12/24 Hr Time Formats, Low link Battery link AlertPower Saving Function, Smartphone Link, 1/100 Stopwatch, Five Alarms And Hourly Time Alert (GMW), Dust- and Mud-resistant link Structure, Digital Compass, Altimeter/Barometer, Thermometer (GWG)Winding: None, quartzFrequency: 6-band time calibration signals