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Memory
FB504 & FB505 stores your stats and data for 7 days in between the times you sync your watch. Stored
data consists of All-Day stats (including steps, distance, calories burned, active minutes, heart rate, and
stationary vs. active hours) as well as sleep stages, SmartTrack activity, and exercise data.
We recommend syncing your watch at least once a day.
Display
FB504 & FB505 has a color LCD display.
Wristband size
Wristband sizes are shown below. Note that accessory wristbands sold separately may vary slightly.
Small wristband
Fits a wrist between 5.5 and 6.7 inches in circumference
Large wristband Fits a wrist between 6.7 and 8.1 inches in circumference
Environmental conditions
Operating Temperature
14° to 113° F
(-10° to 45° C)
Non-operating Temperature
-4° to 14° F
(-20 to -10° C)
113° to 140° F
(45° to 60° C)
Water Resistant Water resistant up to 50 meters
Maximum Operating Altitude
30,000 feet
(9,144 m)