Fitbit FB404 Braccialetto Carica Attività e Sonno - Nero, Piccolo - Senza Accessori!
Simply download the fitbit app to sync with a smartphone, which is available for iOS, Android, and Windows Phone devices. ✔Designed to Fit 5.5 - 6.5" Wrists. ✔App for iOS/Android/Windows Phones. ✔Sync Stats Wirelessly via Bluetooth 4.0.