Tactical 6S™ Hearing Protector   NRR 19dB Folding, low profile design for easy storage Electronics limit amplified sounds to 82dB Distortion-free amplification of low level sounds up to 19dB Stereo microphones enhance sound localization Independent volume controls on each cup Model 97044 Tactical 6S™ Behind the Head Hearing Protector   NRR 19dB Designed for cap and hat wearers Electronics limit amplified sounds to 82dB Distortion-free amplification of low level sounds up to 19dB Stereo microphones enhance sound localization Independent volume controls on each cup Adjustable stainless steel backband Model 97043 Tactical 7S™ Hearing Protector       NRR 24dB Electronics limit amplified sounds to 82dB Maximum distortion-free amplification of low level sounds up to 25dB Stereo microphones provide direction sensitive sound Easy to use volume control Padded stainless steel headband Model 97039