Fitbit One Wireless Activity and Sleep Tracker (Black)
http://www.amazon.in/Fitbit-Wireless-Activity-Sleep-Tracker/dp/B0095PZHPE/ref=sr_1_1?ie=UTF8&qid=1493877250&sr=8-1&keywords=Fitbit+One+Wireless+Activity+and+Sleep+Tracker+%28Black%29

• Tracks steps, distance, calories burned, and stairs climbed. Monitor how long and how well you sleep.
• Wakes you (and not your partner) with a silent alarm. Syncs automatically to your computer or select smartphones and tablets via Bluetooth 4.0
• Set goals, view progress, and earn badges. Share and compete with friends throughout the day. Free iPhone and Android App.
• Small and discreet - wear in pocket, on belt or bra. Log food, weight and more on Fitbit's website or Apps. Sweat, rain and splash proof.
• 1 year Manufacturer Warranty from the date of purchase