Fitbit Charge HR

Sensors & Components

• Optical heart rate monitor
• 3-axis accelerometer
• Altimeter
• Vibration motor

Display

• OLED

Heart Rate

Like all heart rate monitoring technologies, accuracy is affected by physiology, location of device, and different movements.

Water Resistance

Charge HR is sweat, rain and splash proof. However, the device is not swim proof or showerproof. With any wearable device, it’s best for your skin if the band stays dry and clean.

Care

If the band gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Clean the band with a mild soap-free cleanser like Cetaphil or Aquanil. Give your wrist a rest by taking the band off every now and then.Learn more.

Materials

Charge HR's wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. Charge HR also has a surgical-grade stainless steel buckle.

Environmental Requirements

• Operating temperature: −20° to 45° C
• Maximum operating altitute: 9.144 km

Memory

• Tracks 7 days of detailed motion data – minute by minute.
• Tracks daily totals for past 30 days
• Stores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times

Syncing

Charge HR syncs automatically and wirelessly to tablets, computers and 150+ leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology.

• Syncing range: 6 m
• Call notifications via Bluetooth 4.0
• Syncing to computers requires Internet connection and USB port
• Syncing to mobile devices requires Bluetooth and Internet connection
• Syncs with Windows Vista and later, Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices

• Charging cable
• Wireless sync dongle