The Dual-Head Microphone is designed to provide two-way sound pick-up. It has a metallic exterior, offering excellent anti-interference function. This microphone is a versatile piece of equipment; it is compatible with smartphones, cameras, and GoPro devices. For noise reduction purposes, it comes packaged with a wind muff and wind-screen. The 2.5mm silica gel cable material offers durability, strength, and flexibility. The microphone is designed for easy operation and comes with a portable case for transportation convenience. Technical specifications of the Dual-Head Microphone are as follows: Polar Pattern: Omni-directional Maximum SPL: 100dB (@1kHz,1% THD into 1k) Frequency Range: 50Hz~20kHz THD: Output Impedance: 600 Dynamic Range: 114dB(per IEC651) Sensitivity: -35dB3dB re 1V/Pa @1kHz Signal / Noise: 68dB SPL (@1kHz,rel 1Pa per IEC651) Cable Material: Silica-gel Mic Shield Material: Aluminum Alloy Cable Length: 6.0m The package includes: 1 x Dual-Head Microphone 1 x Carry Case 2 x Wind Muffs 2 x Wind Screens 2 x Lapel Clips 1 x Smartphone converter Adaptor