Casio unisex-adult wristwatch G-Shock Bluetooth Tough Solar model GA-B2100-1A1 matte black featuring mobile link analog-digital display carbon core

Product Description: G-SHOCK Smart Link/Bluetooth Tough Solar Analog-Digital Reverse LCD Black GA-B2100-1A1 The octagonal form of the GA-2100, which inherits the design concept of the original G-SHOCK, has been equipped with smartphone linking and Tough Solar technology. To accommodate the increased number of components due to enhanced functionality, a newly developed slim module with optimized circuit board layout has been created. Combined with a carbon core guard structure, it maintains the size feel of previous models. This model features an all-black finish with a minimal color scheme. - Case Size (L × W × D): 48.5 × 45.4 × 11.9 mm - Weight: 52 g - Band Size: 145–215 mm - Case/Bezel Material: Carbon/Resin - Structure: Shock-resistant, Carbon Core Guard - Water Resistance: 20 ATM - Power Source: Tough Solar (solar charging system) - Mobile Link Function: Functionality linked via Bluetooth with compatible mobile phones - Compatible with the "CASIO WATCHES" app - App Features: Automatic time correction, easy watch settings, world time for approximately 300 cities, time & place, reminders, mobile phone finder **Functions:** - World Time: Time display for 38 cities (38 time zones, automatic daylight saving time adjustment) + UTC, home time city swap function - Stopwatch (1/100 second for under 1 hour / 1 second for over 1 hour, 24-hour measurement, lap/split included) - Timer (set unit: 1 second, maximum set: 60 minutes, measured in 1-second increments) - 5 Alarms & Hourly Time Signal - Double LED Light: LED light for the dial (Super Illuminator, afterglow function, afterglow time switch (1.5 seconds/3 seconds)), LED backlight for the LCD section (Super Illuminator, afterglow function, afterglow time switch (1.5 seconds/3 seconds)) - Full Auto Calendar - Operation Sound ON/OFF Switch - Power Saving Function (display turns off after a certain period in the dark to save power) - Battery Indicator Display - Operating Time without Solar Charging: Approximately 7 months with functions used, approximately 18 months in power-saving mode - Other Functions: Hand retreat function (hands can be temporarily moved out of the way when overlapping with the LCD display),