1. High-impact shell: The SM18N2 speaker microphone is made of high-impact ABS and polycarbonate plastic, providing superior durability. It can withstand rough conditions and last for a long time. 2. High-quality and clear audio: The SM18N2 walkie-talkie uses a high-quality speaker and noise-cancelling microphone that provides loud and clear audio. 3. Eco-friendly PU cable and IP54 waterproof: The SM18N2 radio mic features an eco-friendly PU cable reinforced with coiled wire, making it highly . It has a waterproof rating of IP54, making it to rain and dust. 4. Back clip and 3.5mm audio jack: The SM18N2 PTT microphone has a sturdy plastic 360-degree rotating clip that allows for easy positioning on clothing or shoulder straps. It features a 3.5mm audio jack for easy connectivity. 5. Withstood multiple tests: The SM18N2 two way radio microphone has undergone high-altitude performance, vibration, mechanical shock, thermal cycling, external short circuit, and overcharge testing simulations to reliability in harsh environments. Model Number:PTT Microphone Name:Speaker Microphone Model:SM18N2 Microphone:Impedance 2.2ohm Sensitivity:-36dB2dB Frequency response:20Hz-1.6KHz Sensitivity:94dB 3dB Impedance:8ohm15% Audio:2W Microphone:Frequency:20-16000Hz Sensitivity:-40dB 2dB Impedance:2.2Kohm Compatible radios:Suitable for HYT PD700 PD700G PD702 PD702G PD705 PD705G PD752 PD752G PD755 PD755G PD780 PD780G PD780GM PD782 PD782G PD785 PD785G PD788 PD982 PT580H UL 913 Colour:Black Material:Plastic Package Contents: 4 x PTT Handheld Mic Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.