Pro Tekt Mag Gold Noise Reduction Rating 33 Green Hard Specifications: - Low battery warning - Auto shut off - Up to 8x amplification - Use with ipod or scanner - Proform leather, no vinyl no sweat - Ergonomic ear seals for a perfect fit even with glasses - Head band designed to avoid excesive compression - Coated military grade circuit boards with gold connectors for durability - The only earmuff with microprocessors to run continuous system diagnostics - Color- Green - Made in the USA