Olympus Telephone Pickup Microphone Inner-ear type telephone pickup for recording phone calls, usable with mobile phones. By connecting the TP8 to the microphone terminal of an IC recorder and putting the earphone in your ear, you can clearly record phone conversations. Convenient for phone interviews. Plugin-power type, no battery required. Type: Electret condenser microphone Directivity: Omnidirectional Frequency Response: 50～16,000Hz Sensitivity: -34dB at 1kHz (0dB=1V/Pa) Cord Length: 1.5m Output Impedance: 2.2kΩ Power Supply: Plugin power type (1.5V～10V) Plug: L-shaped Ø3.5mm monaural mini-plug Connection: Connect to the microphone terminal of an IC recorder that supports the plugin power system External Dimensions: Ø11.3mm x 19mm Weight: Approximately 8g Accessories: Earpieces (S/M/L) x 1 each Instruction manual included