Street-smart and nature-minded — a fashionable G-SHOCK dressed in all black. The monochromatic design with a matte finish makes for a simple, yet bold design. Key resin components of the bezel and band are made with bio-based resin. Produced using renewable organic resources, this material is expected to help reduce environmental impact. Details Case Size (L x W x H): 46 × 40.2 × 11.2 mm Weight: 40g Case and Bezel Material: Resin / Bio-based Resin Band: Bio-based Resin Band Construction: Shock Resistant Water Resistance: 200-meter water resistance Power Supply and Battery Life: Approx. battery life: 3 years on CR1025 Exterior Glass: Mineral Glass Compatible Band Size: 145 to 190mm Other: Neobrite Watch Features World Time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off Stopwatch:  1/100-second stopwatch, Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes), Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes), Measuring modes: Elapsed time, split time, 1st-2nd place times Timer: Countdown timer, Measuring unit: 1 second, Countdown range: 24 hours, Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Alarm/Hourly Time Signal: 5 Daily Alarms, Hourly Time Signal Light: Double LED light, LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow), LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Light Colour: LED: White Calendar: Full auto-calendar (to year 2099) Accuracy: ±15 seconds per month Other Features: 12/24-hour format, Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.), Regular timekeeping - Hour, minute, second, pm, date, day Mute Feature: Button operation tone on/off