Fitbit Charge 4 Fitness Band Brand New

Description

• Sensors & Components: 3-axis accelerometer, Optical heart rate monitor, GPS, Vibration motor, NFC, Altimeter
• Environmental Requirements: Operating temperature: -4 to 140 F, Operating temperature: -20? to 60 C, Maximum operating altitude: 28,000 feet, Maximum operating altitude: 8,535 m
• Memory: ( Saves 7 days of detailed motion and heart rate data, minute by minute, Saves daily totals for past 30 days, Measures heart rate data at 1-second intervals during exercise tracking and at 5-second intervals all other times
• Heart Rate: Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.
• Syncing: Syncing range: Up to 30 feet, Syncing to mobile devices requires Bluetooth LE and internet connection., Syncs with Mac OS X 12.2 and up, iPhone 5S and later, iPad 5 gen. and later, Android 7.0 and later., Music control via Bluetooth LE on Android and iOS devices