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★Not Dent: Carefully optimized polyurethane thickness and hardness, not dent after long-term hitting. Small size and large area, with thickness of only 3 fingers, not take up space., ★Stable As Hit: 9-layer review board is used as skeleton structure, just to let it withstand your every outbreak. Hoop loop adhesive design, fix it every time it is hit. The more hits, the more stable it will be., ★2 Modes: Training mode, full information, 5 kinds of data real-time display. Critical hit mode, the tolerance is small, the full hit only takes maximum data. Real-time display of data makes every punch more meaningful., ★Screen Protection: Display screen embedded design, reduces possibility of screen damage and hand injuries. Built-in 2000 mAh rechargeable lithium battery, standby for up to 366 days, once charge, standby for 1 year., ★Suitable Group: The height can be adjusted arbitrarily, can be used by adults and children. Suitable for professional training, hobby, fitness, etc.