1. The strap length is easy to adjust to fit your wrist 2. Easy to assemble, no harm to the equipment 3. Material: TPU+Metal 4. Dimensions: 9.17 x 0.7 inches 5. Inner ring size: 4.5-7.8 inches 6. Weight: 13.2 grams 7. Note: The product has only the strap, not the tracker
