Resistance: 32/16(? ) Type: ear fill types Intelligent degree: 98(dB/mW) Brand: shuers The Pin rings scope: 18-2100(Hz) - Update: 2009-07-10

Type:Wear type Resistance:32? Frequency scope:20-20000HZ Trumpet diameter:65mm Intelligent degree:103dB Power:150mw - Update: 2009-07-10

Length:1.3m Trumpet diameter:15mm Frequency:12-22000HZ Resistance:30 ?s Intelligent degree:106db - Update: 2009-07-10

Length: 1.5m Trumpet diameter: 15mm Sensitivity: 106db Frequency: 12-22000HZ - Update: 2009-07-10

Length:1.3m Trumpet diameter:15mm Frequency:12-22000HZ Resistance:30 ?s Intelligent degree:106db - Update: 2009-07-10

Speaker: ? 15mm diameter Impedance: 32 ? Frequency: 20-20 KHZ Sensitivity 108dB: 3dB ( - Update: 2009-07-10