Fitbit Ionic Smartwatch, Blue-Gray/Silver, One Size (S & L Bands Included)

产品详情：

Start dynamic personalized workouts on your wrist with step-by-step coaching

Store and play 300+ songs, plus download playlists from Pandora. Seamless watch case is water-resistant up to 50M

Use built-in GPS/GLONASS to track pace, distance & routes and get PurePulse? continuous heart rate tracking & real-time zones

Package includes both large and small size bands for the perfect, comfortable fit for all-day & all-night wear

Access your favorite apps for sports, weather & more and make payments on the go with a built-in NFC chip

Track runs, swims, rides, workouts, all day activity and sleep with 4+ day battery life (varies with use & other factors)