1. 3D acceleration sensor captures small movements, providing more accurate step counting. 2. Freely switch step counting methods with a more user-friendly and practical design, supporting both single and daily step tracking. 3. Offers comprehensive functions and convenient features for a comfortable user experience. 4. Fast charging with integrated polymer battery; USB interface built into the watch body. 5. Full-process sports tracking including calories, steps, and distance, with sports data memory function. Color: Black Material: Silicone Size: 215 x 17 x 9mm Package Contents: 1 x Smart Bracelet Note: The package includes only the items listed above. Other products are not included. Note: Due to light reflection and differences in display screens, the color of the item in the image may vary slightly from the actual product. Measurement error allowed is +/- 1-3cm.