Country of Origin: China (mainland)Brand Name: GPMPrimary Competitive Advantages: Country of Origin Experienced Staff Guarantee/Warranty Price Product Features Product Performance Prompt Delivery Quality Approvals Reputation Service Small Orders Accepted Key Specifications/Special Features: Material: PC, black (white) color, polished surface Impedance: Receiver 150, transmitter 1K Sensitivity: 98±db S.P.L Frequency Response: frequency response relative to the 1KHZ response shall lie between the upper and lower Limited show in FIG1 Weight: 160 to 200g Payment Details: Payment Terms: T/T ,Western unionMinimum Order: 500 to 999 Pieces Delivery Details: FOB Port: ShenzhenLead Time: 1 - 30 days