PINGKO Pedometer, Fitness Tracker Solar Energy Activity Tracker Calories Burned with Blet Clip for Walking SOLAR POWER SUPPLY,energy saving and environmental friendly LARGE SCREEN easy to read the numbers and tracks your daily steps ACCURATE ACTIVITY TRACKER calculates steps, distance travelled in miles and km, calories burned 7-DAY MEMORY RECORDS of activity to easily track your daily activities and keep you motivated to stay active. It also automatically resets at midnight so you can track your steps, distance, calories burned and duration everyday BATTERY INCLUDED - PINGKO Always-On Screen Technology automatically puts the sensor to sleep to preserve battery life when no movement is detected. The Battery should last up to 1 year. 100% Satisfaction Guaranteed