印度采购需求：联络中心耳机、无线耳机、带麦克风的降噪耳机、USB 耳机、呼叫中心耳机、办公耳机

I'm interested in sourcing NAC USB headsets for an upcoming project. Could you please provide me with your specifications, including available models, pricing, and any bulk order discounts? Additionally, I'd like to know about the lead time for delivery and warranty information. It's important that the headsets are of high quality and suitable for extended use. If you have any catalogs or brochures, I'd appreciate it if you could share those as well. Looking forward to your prompt response!