Casio Japan unveiled the upcoming Baby-G G-MS MSG-B100 featuring Tough Solar power and Bluetooth smartphone link. The MSG-B100 is the slimmest G-MS model and the first with Bluetooth. It looks similar to other stainless steel G-MS models, but offers an updated style with an octagonal bezel.
The series was revealed in a YouTube video that features a model with a rose gold ion plating and a stainless steel band. The dial is white with metallic-style 3D markers and an LCD day and date display. The watch has a time and place function to log the current location on the Baby-G Connected smartphone app by pressing a watch button. It also has a phone finder function, and presumably automatic time adjustment and watch settings access through the app. Other features include shock resistance and 100-meter water resistance.
Update: Casio announced the black MSG-B100DG-1AJF (¥42,350 with tax-included), rose gold MSG-B100DG-4AJF (¥42,350) and gold MSG-B100DG-9AJF (¥42,350) for a June 2021 release in Japan. Additional features include world time, 1-second stopwatch (60 minutes max with lap and split), countdown timer (60 minutes max with 1-second set unit), double Super Illuminator LED light with adjustable afterglow, power save function, full auto calendar, 12/24 hour format, hand shift function, date display (with month/day display replacement), and day of week display (with 6 language options). The MSG-B100 measures 47.5 x 37.2 x 9.7 millimeters and weighs 75 grams.
Update 2: G-Shock U.K. has the rose gold MSG-B100DG-4AER and yellow gold MSG-B100DG-9AER (£299 each) listed as coming soon.
Update 3: G-Shock U.S. released the MSGB100G-1A with a resin band for $220 in September 2021.