1. Material: reinforced PP, encapsulated TPR, spring 2. Power supply: button battery (included) 3. Intelligent counting, electronic liquid crystal display 4. The quantity can be reset and reused 5. 4mm high-strength thickened carbon steel spring, durable and not easy to break 6. 10-100KG strength can be adjusted freely, rotate the button to add or subtract 7. Strengthen hand strength and finger flexibility 8. TPR ergonomic handle, non-slip fit fingers 9. Size: 14.5x16cm 10. Weight: about 200 grams
