FITBIT CHARGE 4 BLACK: Specifications

WHAT\'S INCLUDED: Fitbit Charge 4 Classic wristband (both small & large) Charging cable WHAT\'S INCLUDED IN SPECIAL EDITION: Fitbit Charge 4 Woven reflective band (both small & large) Classic wristband (both small & large) Charging cable SENSORS & COMPONENTS 3-axis accelerometer Optical heart rate monitor GPS Vibration motor NFC chip for Fitbit Pay Altimeter BATTERY & POWER Battery life up to 7 days, or up to 5 hours with continuous GPS use. Battery life and charge cycles vary with use, settings and other factors; actual results will vary. We recommend charging every few days to ensure you’re always tracking. Battery type: Lithium-polymer Charge time (0-100%): Two hours Radio transceiver: Bluetooth 4.0 MEMORY Saves 7 days of detailed motion and heart rate data, minute by minute Saves daily totals for the last 30 days Measures heart rate data at 1-second intervals during exercise tracking and at 5-second intervals all other times WATER RESISTANCE Water-resistant to 50 metres. After swimming or getting the band wet, we recommend drying the band because, as with any wearable device, it\'s best for your skin if the band is clean and dry. We do not recommend wearing Fitbit Charge 4 in a hot tub or sauna. Learn more. CARE Give your wrist a rest by taking the band off every now and then. If the band gets wet or you sweat in it, remove and completely dry the band before putting it back on. Learn more. MATERIALS This tracker includes a plastic resin case and the band includes a stainless steel buckle. The classic band is made of a flexible, durable material similar to that used in many sports watches. The woven band is made from a comfortable polyester. HEART RATE Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements. ENVIRONMENTAL REQUIREMENTS Operating temperature: -20° to 60° C Maximum operating altitude: 8,535 m SYNCING Syncs automatically and wirelessly to most popular phones and tablets using Bluetooth LE wireless technology. Syncing range: Up to 9m Certain features like smartphone notifications may require Android 7.0+. Check your device compatibility. 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. DIMENSIONS 35.8mm l x 22.7mm w x 12

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