The Freedom You Want. The Protection You Need. CALIBER is a Bluetooth shooting earbud that packs a big punch in a little package. This electronic ear pro is completely dust, sweat, and waterproof and can run up to 13 hours without needing to be recharged. The completely cordless design allows you to move freely while Tactical Sound ControlT delivers amplified natural sound and gunshot noise reduction. TACTICAL SOUND CONTROL: Block impact noise with audio passthrough technology. TSC enables conversation and environmental awareness while suppressing percussive noises from gun ranges or other hunting and shooting related activities. Also features passive noise isolation of 25 dB noise reduction rate (NRR). ALL DAY BATTERY: ISOtunes Sport CALIBER features lightweight rechargeable lithium-ion batteries with up to 13 hours of battery life on a full charge while the charging case can provide an additional 26+ hours of battery on a single charge. Certain to provide you with hearing protection for long sessions at the shooting range. Uses Bluetooth 5.2 technology. CLEAR CALLS AT THE RANGE: Signature noise suppressing microphone with echo cancellation technology help block percussive noise from firearms, air compressors, or hammers for clear calls in loud environments. BUILT TO LAST: Whether you’re at an indoor range, or out in the elements, ISOtunes Sport CALIBER features IP67 rated protection against sweat, water, and dust. No matter your environment, ISOtunes Sport will hold up against the elements. ISOtunes Sport CALIBER comes with three pairs of ISOtunes TRILOGY Short Eartips (S, M, L), three pairs of ISOtunes TRILOGY Tall Eartips (S, M, L), 1 pair of silicone eartips, a charging case, charging case lanyard, and USB-C charging cord.