BINGER WATCH - Roman numeral day date collection They are very inexpensive for the quality and keep perfect time! Adjustment Method Step 1: Pull the crown all the way out to set the time Step 2: Pull the crown halfway out to set the day & date★forward & backward) Please Note: watch itself will adjust the day/date at this time zone (watch's hour hand at 10pm-3am), so please adjust the day/date when hour hand is out of the time zone, otherwise day/date may not be setting correctly and movement may be possibly damaged. Specification Case diameter: 1.25" Case thickness: 0.36" Band length: 7" Net weight: 34.5g Water resistant: 3 ATM BATTERY Battery life: Approx. 18 months Watches are often classified by watch manufacturers by their degree of water resistance which, due to the absence of official classification standards, roughly translates to the following (1 metre ★ 3.29 feet). Water resistance rating/Suitability/Remarks Water Resistant 3 atm or 30 m/Suitable for everyday use. Splash/rain resistant. Not suitable for showering, bathing, swimming, snorkelling, water related work and fishing./Not suitable for diving. Water Resistant 5 atm or 50 m/Suitable for swimming, white water rafting, non-snorkeling water related work, and fishing./Not suitable for diving. Water Resistant 10 atm or 100 m/Suitable for recreational surfing, swimming, snorkeling, sailing and water sports./Not suitable for diving. Manufacturers water resistance classifications are interpretations and are not part of any ISO standard definition.