NewsFitbit enhances its Premium service and releases Fitbit OS 4.1 with new sleep features by Yvonne Ng November 14, 2019 by Yvonne Ng November 14, 2019 1.1K viewsAs the end of the year approaches, Fitbit announced its latest Fitbit OS 4.1 … 0 FacebookTwitterPinterestWhatsappTelegramEmail
