User's Manual

46
General Info and Specifications
Sensors
Fitbit FB415 contains the following sensors and motors:
• A MEMS 3-axis accelerometer, which tracks your motion patterns
• An optical heart-rate tracker
• An ambient light sensor
Materials
The housing and buckle on FB415 are made of anodized aluminum. While
anodized aluminum can contain traces of nickel, which can cause an allergic
reaction in someone with nickel sensitivity, the amount of nickel in all Fitbit
products meets the European Union's stringent Nickel Directive.
The Fitbit FB415 classic band is made of a flexible, durable elastomer material
similar to that used in many sports watches.
Wireless Technology
FB415 contains a Bluetooth 4.0 radio receiver
Haptic feedback
FB415 contains a vibration motor for alarms, goals, notifications, reminders, and
apps.
Battery
FB415 contains a rechargeable lithium-polymer battery.
Memory
FB415 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
FB415 has a color LCD display.