CHASE II Wireless Activity Wristband, Slate, Large with smart Silent Vibration Alarm + USB Charging cable - Compatible for Android 4.3 or higher Devices wear it like a watch with smooth,comfortable wristband and witness the fitness of your life on your wrist, track &amp; Record your activity 24/7, Get guidance &amp; motivation to move more, reach your activity goals, improve your fitness, Monitor your sleep automatically and wake with a silent alarm Activity WristBand, accurately tracks &amp; Record all-day stats like overall calories burned, steps taken, distance traveled, stairs climbed , hours slept, quality of sleep and other personal goals Sync to your smartphones Android 4.3 or higher and Access real-time stats, analyze, view progress and Set personal goals to keep you motivated. Shows real time fitness stats like daily activity, calories burned, time of day on a bright OLED display and communicates with you via vibrations at the wrist from a Smart Alarm to wake you up with an Alert to get you moving Backed with a Trackifit 30 Day 100% satisfaction guarantee. No Hassle Returns & Refunds, Refer the user manual for product help and support.MORE WAYS TO GET HELP: Visit Product help page http://help.trackifit.com/