Radians R-3700 Quad Mic Electronic Hearing Protection 24dB NRR

The Radians R-3700 electronic hearing protection combines four directional microphones with 24dB noise reduction rating to deliver superior situational awareness without sacrificing ear protection. This over-ear design automatically suppresses harmful noise levels while amplifying safe environmental sounds up to 5 times normal volume.

What Makes This Different

Unlike basic passive earmuffs, the R-3700 features quad microphone technology that provides 360-degree sound detection and directional audio awareness. The electronic compression circuitry reacts in 0.5 milliseconds to protect against sudden loud noises while maintaining clear communication and ambient sound detection. This dual-mode operation allows users to hear range commands, conversations, and approaching footsteps while blocking gunshots and other damaging noise levels.

Key Features

• 24dB Noise Reduction Rating (NRR) meets ANSI S3.19 standards
• Four directional microphones provide enhanced spatial awareness
• Electronic sound amplification up to 5x normal hearing levels
• 0.5 millisecond compression time protects against impulse noise
• Adjustable padded headband fits head sizes 6.5-8.25 inches
• Low-profile polymer cups accommodate rifle stocks and shooting positions
• Runs on two AAA batteries with 200+ hour battery life

The R-3700 performs reliably in temperature ranges from -10°F to 120°F, making it suitable for year-round outdoor use. The sealed electronic components resist moisture and dust while the foam ear cushions create an effective acoustic seal. Range officers appreciate the ability to communicate clearly with shooters while maintaining full hearing protection during live fire exercises.

Technical Specs

• Noise Reduction Rating: 24dB NRR
• Microphones: 4 directional omnidirectional mics
• Amplification: Up to 5x normal volume
• Compression Time: 0.5 milliseconds
• Power: 2 AAA batteries (included)
• Battery Life: 200+ hours continuous use
• Weight: 13.2 ounces
• Color: Pewter and black polymer construction
• Headband: Adjustable padded design
• Operating Temperature: -10°F to 120°F

Professional shooters and range safety officers choose the R-3700 for its proven reliability and superior sound management capabilities. The quad microphone array delivers the directional awareness needed for tactical training while the fast-acting compression protects hearing during rapid-fire sequences.