Take on to a healthy lifestyle and compete with yourself with  Nike+ Fuelband SE Black Medium / Large.  This stylish and simple to use tracker is a fun and smart way to keep track of your active life. From counting the number of steps you take in a day to the number of calories you've burnt to tracking your sleep, this attractive band will measure movements of all kinds. Motivating you to outdo yourself each day, you can track your progress on the LED display. Earn NikeFuel for goals achieved and try to climb to the top of the Leaderboard. Water-resistant, this band connects with smartphones using Bluetooth 4.0

Features:

• 20 colour LED lights show Daily Goal progress from red to green
• 100 white LED lights show time, NikeFuel earned, calories burned and steps taken
• Water resistant and can be worn in shower or rain but not while swimming
• Built-in USB 2.0
• Bluetooth 4.0 pairs it to smartphones
• Real-time feedbacks, move reminders and insights
• NikeFuel Rate keeps track of your intensity during a workout
• Nike+ Sessions track the intensity of your workouts
• See your progress on the LED display at the press of a button
• Leaderboard keeps track of your achieved group goals or individual goals
• Collect Nike+ trophies and unlock special celebrations as you push yourself to the max
• Celebrate reaching your goals with new milestones and on-band animations
• Comes with two easy to insert links to adjust your fit- 0.32 in (8 mm) and 0.63 in (16 mm)
• Built-in 3 axis accelerometer to measure your motion throughout the day
• Ambient light sensor detects environmental light levels and adjusts the display's brightness accordingly
• Stays charged for up to four days

Compatible with:

• Mac OSX v10.6 and above
• Windows XP, Vista, 7 and 8
• iPhone 4s and above
• iPod touch 5th generation and above