SENS™ enables users to remain aware of their surroundings, communicate in noisy environments and protect their hearing from harmful noise. Featuring a rugged design for heavy duty and general use in environments requiring intrinsically safe certification, the IS Smart Muff is a simple to use, extremely comfortable communication device that delivers face to face, two-way or Bluetooth® cell phone communication, all without the need to remove hearing protection. With Sensear's new IS Smart Muff, there's also no need to connect to other communication devices for short distance communication. The IS Smart Muff enables ear muff to ear muff communication in high noise environments up to 50 yards and is perfect for workers who work in groups where it is critical to communicate within short distances.