ISOtunes Sport OPMOD CALIBER True Wireless Tactical Earbuds w/ Bluetooth 25 NRR Wolf Gray Universal. Built with Tactical Sound Control technology these Ear Plugs provide an NRR of 25dB while amplifying softer environmental noises so that you can stay in tune with your surroundings. Designed with dustproof and waterproof protection these protective ear buds are immune to sweat and are built to last. As an OPMOD exclusive product these ISOtunes Sport CALIBER Bluetooth Earbuds are available in unique Wolf Gray and FDE colors with OPMOD branding that you won t find anywhere else Protect your hearing with the OPMOD ISOtunes Sport Caliber Wireless Earbuds to reduce loud sounds like gunshots while remaining aware of what s going on around you. Specifications for ISOtunes Sport OPMOD CALIBER True Wireless Tactical Earbuds With Bluetooth 25 NRR: Manufacturer: OPMOD NRR: 25 dB Quantity: 1 Size: Universal Package Type: Box Features of ISOtunes Sport OPMOD CALIBER True Wireless Tactical Earbuds With Bluetooth 25 NRR: Tactical sound control technology Safemax technology True wireless 2 hour auto power off Background noise-reducing microphone IP67 durability rating Package Contents: ISOtunes Sport OPMOD CALIBER True Wireless Tactical Earbuds With Bluetooth 25 NRR 3 Pairs Of Short Trilogytm Foam Eartips (S/M/L) 3 Pairs Of Trilogytm Foam Eartips (S/M/L) 1 Pair Of Silicone Triple Flange Eartips Charging Case With Lanyard USB - C Charging Cable Replacement Accessories ISOtunes Sport OPMOD IT-17OPGR: ISOtunes Sport CALIBER True Wireless Tactical Earbuds w/ Bluetooth 25 NRR Wolf Gray Universal