Working product CASIO Casio G-SHOCK G-Shock GBD-800-1BJF Bluetooth connection function New battery replaced Used "GBD-800" is the second model of the new sports line "G-SQUAD" that G-SHOCK unveiled at the end of 2017. It is equipped with functions such as a "step tracker" that records the number of steps by connecting to a smartphone via Bluetooth. The purpose of the collection is to make sports and exercise more accessible. G-SHOCK has also developed models that support the "mobile link function" that utilizes Bluetooth, but this collection is characterized by its greater emphasis on sports functions. Size Case diameter: Width approx. 50mm Wrist circumference: Maximum approx. 20cm *Please forgive any errors due to amateur measurements. Currently working. New battery replaced in September 2025. Simple button operations (time setting, stopwatch, alarm, light) have been confirmed to work properly. *I do not know all the detailed functions. There are minor scratches and slight dirt due to daily use. *The windshield has little wear and tear and is very clean without any noticeable scratches. *The original belt has some wear and tear, but it is in the clean category without any noticeable dirt or damage. *Because it is a recent digital watch, it can be used for daily use after arrival. *We do not know the frequency of use, so we cannot guarantee the waterproof performance. Please check the images for other details such as the condition. *All images are included. Please look at the images and make a decision before purchasing. [Bluetooth connection function] This G-SHOCK has Bluetooth connection and provides convenient functions in cooperation with a smartphone. [Waterproof performance] It has waterproof performance that supports swimming and supports an active lifestyle. [Durability] With the shock-resistant design unique to G-SHOCK, you can use it with confidence even in harsh environments. - Brand: CASIO - Model: G-SHOCK - Function: Bluetooth connection Thank you for viewing. G-SHOCK G-SQUAD GBD-800 series GBD-800-1BJF (Black) Brand: CASIO G-SHOCK G-SQUAD