Altus Brands Pro Ears STEALTH 28 HTBT Lightweight Noise Reduction NRR 28 PEEBHTBTBLK (Includes Bluetooth). PRO EARS : STEALTH 28 HTBT. Step into a world of advanced hearing protection with the Pro Ears Stealth 28 HTBT. Designed specifically for experienced shooters like you, this remarkable behind-the-head electronic hearing protector solution combines cutting-edge technology, bluetooth connectivity, and unmatched comfort to elevate your shooting experience. The Stealth 28 HTBT offers a winning combination of advanced bluetooth hearing protection, comfort, and durability. It is the ideal choice for experienced shooters who prioritize their hearing safety and are seeking an enhanced shooting experience. BLUETOOTH: 5.0 10 m. WEIGHT: 27g with tips installed. ISOLATION: Noise isolating microphones. WORKING HOURS: 15 working hours. CHARGE TIME: 2 hours. BATTERY : Rechargeable USB-C Li.