This step counter can be battery powered and solar powered. Comes with a clip, it will be the best step counter for you. Why not have a look?Features:With this step counter, you will achieve your exercise goals easily because it can track your steps, distance traveled and calories burned each day.Portable size, cute and lovely, comfortable to wear with all kinds of clothing, you can also put in a pocket or bag or clip on your waist, belt or bra.Large display screen and 3 buttons for pressing, convenient to read and simple to use, will be the best fitness monitor for men and women.For accurate tracking, please mount the unit closer to the waist, because the paces are detected by the movement of the waist.The cell battery can be used for 1 year if you are a night runner, while it can be used for about 2-3 years if it's solar powered.It can be battery powered and solar powered, making it energy-saving.Specification:Type: Fitness TrackerMaterial: ABSColor: Blue, Red, Silver (Optional)Battery: 1 * L1131F (AG-10) Cell Battery (Included)Item Size: Approx. 68 * 50 * 27mm / 2.68 * 1.97 * 1.06inPackage Size: Approx. 75 * 65 * 35mm / 2.95 * 2.56 * 1.38inPackage Weight: Approx. 60g / 2.12ozPackage List:1 * Step Counter1 * User Manual