Casio G-Steel [GST-B1000-1ADR]

A tough G-SHOCK dressed in refined structural beauty — the G-STEEL GST-B1000, now with a urethane band for a comfortable, lightweight fit. 
With sharply contoured lines, the metal bezel of the GST-B1000 delivers distinctive strength and sophistication for a sleek, urban look. The model with the black dial evokes fearless solidity, while the model with the blue dial, finished in vapor deposition, seems to change from glance to glance as light shifts across its surface. Choose your favorite look — either one is ready to take on the style and setting of whatever your day brings.
Get the solid G-STEEL feel you love with the metal exterior and the easy everyday comfort and sporty style of a urethane band. The lighter, more comfortable, and totally natural fit offers long-wear comfort that your wrist will love, whether you’re working or playing hard. 
The bezel design, paired with the brick pattern inherited from the very first G-SHOCK, adds sporty style to a minimalist look. Adhesive glass bonding and a compact module result in a slimmer, lighter design without sacrificing the shock-resistant construction, thanks to the metal bezel that guards against impact and the carbon-reinforced resin case that protects the module. All of this comes together in an exacting combination of comfort and outstanding practicality, with Bluetooth®, Tough Solar charging, and more.
Sophisticated metal and lightweight urethane blend seamlessly with a wide range of outfits, from business suits to weekend casual to outdoor adventures. Elevating tough construction, soft comfort, and modern elegance to a whole new level, the GST-B1000 is an all-around companion, ready for whatever comes your way.

Dimensions & Build
Case Size: 46.9 × 44.2 × 11.6 mm
Weight: 58 g
Material: Bio-based Carbon / Stainless steel
Band: Bio-based resin band
Construction: Shock Resistant, Carbon Core Guard structure
Glass: Mineral Glass
Crown: Screw Lock Crown
Compatible band size: 145 to 215 mm
Water Resistance: 200-meter water resistance
Other: Neobrite

Power & Battery
Power Supply: Tough Solar (Solar powered)
Approx. battery operating time: 5 months on rechargeable battery (normal use without exposure to light after charge), 18 months on rechargeable battery (stored in total darkness with the power save function on after full charge)
Battery Alert: Low battery alert
Energy Saving: Power Saving (hands stop to save power when the watch is left in the dark)

Time Adjustment & Smartphone Link
Time Adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the time
Smartphone Link: Mobile link (wireless linking using Bluetooth®)
App: CASIO WATCHES
Connectivity Features: Auto time adjustment, Easy watch setting, Time & place, Phone finder

Stopwatch
Stopwatch: 1-second stopwatch
Measuring Capacity: 29'59 (30 minutes)
Measuring Mode: Elapsed time

Timer
Countdown Timer: Countdown timer
Measuring Unit: 1 second
Countdown Range: 30 minutes
Countdown Start Time Setting Range: 1 minute to 30 minutes (1-minute increments)

Alarm
Alarm: Daily alarm

Light
Light: LED light (Super Illuminator, afterglow)
Light Color: White

Timekeeping & Accuracy
Analog: 3 hands (hour, minute; minute hand moves every 10 seconds, second), 2 dials (24-hour, day)
Calendar: Full auto-calendar (to year 2099)
Day Indicator: Day indicator
Date Display: Date display
Accuracy: ±15 seconds per month (with no mobile link function)