An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet.Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor .Your choice of four distinctive styles—the simplicity of a silver metal band and silver case; light silver case set against dark resin band; dial in dramatic red vapor deposition finish paired with a black ion-plated bezel; or dial in bold blue vapor deposition finish with black ion-plated bezel and band. With top bezels treated with five different finishes and middle bezels treated with four, these G-STEEL timepieces deliver exceptional metal textures from every angle.* Slimmest profile as of December 2020
Stainless Steel/Resin
46.6 × 49.6 × 12.9 mm
200 meters
Resin/Stainless Steel
Mineral
Shock Resistant
Stainless Steel
One-touch 3-fold Clasp
Apps: CASIO
App Connectivity Feature: Auto time adjustmentEasy watch settingApproximately 300 world time citiesTime & placeReminderPhone finder
Energy Saving Feature: Power Saving
Mute Feature: Button operation tone on/off
Shock resistant
20 bar water resistant
Keeps yourself in time
Stable solar power
Easy to operate via smartphone
Easy to see in darkness
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GSTB400D-1A
G-STEEL
160 g
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