These are the latest additions to the G-SQUAD lineup of sports watches from G-SHOCK, now with Bluetooth capabilities that allow continuous connection with a smartphone. These watches can link with the GPS of a smartphone for quicker calibration of distance measurements, enabling more accurate running distance measurements, even during use without a phone connection. The displays of these watches use a high-definition MIP LCD, while Super Illuminator face illumination keeps face information easy to read, even in the dark. The soft urethane band material provides improved comfort, while a large number of band holes let you adjust the fit to your particular wrist. From daily health management to improved running endurance, these new G-SQUAD models provide tools that support a wide range of fitness needs. Case/ Bezel Material: Resin/ Aluminium Resin Band Shock Resistant Mineral Glass 200m Water Resistance LED Backlight w/ Super Illuminator and Afterglow Mobile Link (wireless via Bluetooth) Training Function Training Data (up to 100 runs, 140 lap times per run) Elapsed time, distance, pace, cals burned Life Log Data User Profile Creation Flight Mode World Time (38 time zones) 1-Second Stopwatch Countdown Timer Vibrator 4 Daily Alarms w/ Snooze Power Saving (display goes blank to save power 3 hours every day) Full Auto Calendar (up to 2099) Button Operation Tone On/ Off Vibration On/ Off Approx. Battery Life: 2 years on CR2032