Note: 1. This device is a condenser microphone. You must insert a dry battery before using it, and make sure the +/? connection is correct. To avoid battery corrosion, remove the microphone when it is not used for a long time._x000D_2. Battery not Included. Specification: Item Type: Microphone_x000D_Material: ABS, Metal_x000D_Colour: Black_x000D_Frequency Response: 100 Hz-14,000 Hz_x000D_Impedance: 1,000 Ohm_x000D_Output Sensitivity: -65 +/-3dB (odB=1.v/ Bar)_x000D_Battery: 1 x AA Battery (not Included)_x000D_Cable: Approx. 6m/236in Features: 1The microphone cord is Approx. 6m/236in long, suitable for most occasions such as meeting rooms, auditoriums, lectures, live recording, etc. 2Use tinned copper core to prevent external interference, stable signal transmission, fast frequency matching, high speed transmission. 3The shell is made of ABS material, precision processed, small in size, sturdy and durable, easy to carry. 4Lavalier style wear, throw away the tedious wiring use, equipped with sturdy metal clip, strong stability. 5Widely applicable, with Approx. 6.35mm/0.25in plug, suitable for signal connection between Approx. 6.35mm/0.25in audio equipment. PackageList: 1 x Condenser Microphone with Wire 2 x Microphone Cotton 1 x Clip