Check the listing for details. ISOtunes PRO 3.0 Bluetooth Ear Protection- 27 dB NRR. Condition: New, Made in United States. Listed at 108.00 USD. Brand new. Comes with USBC cables, extra ear tips and a little case. The ISOtunes PRO 3.0 Bluetooth Ear Protection is a high-quality pair of ear plugs designed for optimal comfort and protection. With a Noise Reduction Rating (NRR) of 27 dB, these ear plugs provide excellent noise insulation for various industrial and recreational activities. The Bluetooth functionality allows users to listen to music or take calls while maintaining their hearing health, making them a versatile and practical choice for those looking for reliable ear protection. The Isotunes brand is known for producing durable and effective personal protective equipment, making the ISOtunes PRO 3.0 a trusted choice for those seeking superior ear protection.an