Smart-A-Rolla is self contained watch that works without a Smartphone or a Bluetooth connection it’s a Fitness Tracker Bracelet Style Watch And Pedometer all in one. It stores and displays all info on the watch and that can be downloaded to a computer and works with the Smart-A-Rolla Fitness Tracker software which is available for FREE to download from us. The software is not required to use the watch. Smat-A-Rolla tracks your fitness activity including many important things like : It has built in 3D Pedometer. It calculates calories burned and shows your progress on the software. It has a built-in Gravity Sensor display LED Watch when the hand is raised up towards the face. It shows Time like a Watch in 12-hour format or 24 format selectable thru the app. It tells you the temperature of your surroundings, where ever you may be. It has a silent vibrating alarm. It has a rechargeable battery that can be plugged into any USB port and can SYNC and update your activity data on a desktop or a laptop, that is a window based computer. The sports band is splash proof and sweat resistant. It is made from Silicon materials and can fit wrist up to 8 inch. For support visit our page: http://vistashops.net/smartarolla SPECIFICATIONS: Sports Watch Movement: Quartz. Display: Digital. Features: Chronograph, Calendar, Thermometer, LED. Case Material: Silicone. Case Thickness: Approx 2 mm. Dial Colors: Yellow, Green, Red, Blue, Grey, Black. Band Material: Silicone & Plastic. Band Length: Approx 9 inch long. Band Width: Approx 4/8 of an inch wide. Software download available with band purchase. Battery: Li Polymer rechargeable. Band Colors: Yellow, Green, Red, Blue, Grey, Black.