Price: €185.00
(as of Apr 21, 2025 07:09:14 UTC – Details)
From the manufacturer
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.















Batteries : 2 Lithium Ion batteries required. (included)
Is Discontinued By Manufacturer : No
Product Dimensions : 4.03 x 4.03 x 1.12 cm; 190 g
Date First Available : 25 Aug 2022
Manufacturer : Fitbit
ASIN : B0B6WVCJ2H
Item model number : FB521BKGB
Country of origin : China
Department : unisex_adult
Guaranteed software updates until : unknown
6+ days battery life and quick charge function. Water resistant housing up to 50 m deep.
Compatible with iOS 15 & Android OS 9.0.
Living healthier: cEDA-sensor for all-day stress detection and stress management index, ECG-function, SpO2, dashboard with health scores, cycle tracking, mindfulness exercises.
Measure and improve sleep quality: personal sleep profile, sleep phase recording, breakdown of sleep index, intelligent alarm clock and sleep mode.
Comprehensive activity tracking: Permanent heart rate monitor, built-in GPS, training intensity map, daily form index, tracking of active zone minutes, all-day activity tracking, over 40 training types, automatic training detection.
24/7 comfortable to wear: Displays calls, messages, appointments and notifications from smartphone apps via Bluetooth, personalised dials, compatible with iOS 15 and Android OS 9.0, water-repellent housing up to 50 m depth, 6+ days battery life, quick charging function.
6 months of premium membership included for more in-depth analysis plus exclusive access to video workouts, the daily form index, and more.














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