Highlight - Detection sensitivity: diameter: about 2.5mm/ 0.10 inch ball - Power supply: 9 Volt rechargeable battery (6F22ND) (not included) - Size: about 410*85*45 mm/16.14*3.35*1.77 in - Packing size: 420*330*460 mm/16.54*12.99*18.11 in - Working temperature: -5°C~ 55°C