美国采购需求：健身追踪器心率监测器、腕式智能心率监测器、臂带心率监测器、心率监测器

I'm interested in your wireless heart rate monitor and would like to know the pricing for bulk orders. Specifically, what would be the cost for 30 units, and how about for 50 units? It would be helpful to understand any discounts or special offers available for larger quantities. Additionally, could you confirm if this device is compatible with Spivi software? This information is crucial for us to ensure integration with our existing systems. Looking forward to your prompt response!