G-Shock Bluetooth GBD800SF-1. This new G-SQUAD GBD-800 model is the latest addition to the G-SHOCK lineup of watches that are constantly setting new standards for timekeeping toughness. The orange accent coloring of this model expresses adventure and discovery, as well as warmth and sociability. This new model is the perfect choice for those facing new challenges in a spirit of unbending toughness. Features include: Resin Band Shock Resistant Mineral Glass 200-meter water resistance LED backlight (Super Illuminator) Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Mobile link (Wireless linking using Bluetooth®) Step count using a 3-axis acceleration sensor: 0 to 999,999 step count display range Step Goal Progress Display (step count goal setting range: 1,000 to 50,000, 1,000-step increments) Step Count Graph: Hourly step count for the past 7 hours on a 6-level graph Step indicator Power Saving: Auto sensor sleep state entry after fixed period of non-activity Dual time (Home time swapping) 1/100-second stopwatch Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Recorded data: Up to 200 records (measurement start month, date, lap/split times) Target Time alarm up to 10 Target Time settings Countdown timer Timer for interval measurement (up to five time settings) Measuring unit: 1 second Input range: 00'00" to 60'00" (1-second increments) Others: Auto-repeat (number of repeats settable from 1 to 20), auto-start 5 daily alarms Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping: Hour, minute, second, pm, year, month, date, day Accuracy: ±15 seconds per month (with no mobile link function) Approx. battery life: 3 years on CR2025 This watch comes with a G-Shock authenticity certificate.