Product size: 4.5cm x 7.6cm x 1.1cm Track steps and calories. If no movement is detected for 3 minutes, it automatically enters sleep mode and works when you start moving again. Using 3D 3-axis sensor technology, track your daily activities with extremely accuracy. can display estimated calories burned. Up to 7-day of activities are automatically stored, so you can stay motivated and track progress. Automatically resets at midnight, you can easily track your daily pace, distance and activities. Suitable for adults, seniors and children. No need hanging rope, just hook it on the belt or put in pocket or bag. Simple design, easy to use. Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding. Colors may vary depending on the monitor, please understand. Attention:Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly