Item Type: Digital Wristwatches Feature: Complete Calendar,LED display Band Material Type: Rubber Water Resistance Depth: No waterproof Dial Diameter: 16mm Case Thickness: 10mm Dial Window Material Type: Hardlex Case Shape: Rectangle Model Number: Digital LED Wristwatches Style: Fashion & Casual Movement: Digital Clasp Type: Buckle Band Width: 16mm Band Length: 24cm Boxes & Cases Material: No package Case Material: Stainless Steel Gender: lovers' Item Type: Digital WristwatchesSpecification:Item Type: Digital Wristwatches Gender: Men/Women/Kids Style: Fashion & Sports Method of use: Display: light to display the time, press again to display the date, then press the display seconds; Adjustment: long press for a few seconds, light flashes, then add hours, hours after a good tune long press for a few seconds, and then press the increase in minutes, this method in order to adjust the time, year, month, day