Features: case/bezel material: resin/stainless steel silicon strap solar movement mineral crystal black dial analog digital display double led light low temperature resistant time calibration signal reception the auto hand home position correction digital compass world time 1/100-second stopwatch countdown timer 5 daily alarms hourly time signal hand shift feature battery level indicator full auto calendar 12/24 hours display accuracy: ±15 seconds per month luminous hands and indexes screw down crown screwed case back buckle clasp 100m water resistance approximate size of case : 50.5 × 47.2 × 13.3mm