Liberator HP 2.0 Over-The-Head Hearing Protection Features: - First of its kind multi-mode adjustability providing Active Noise Reduction (ANR), Active Noise Cancellation and both simultaneously - 3 Distinct hearing protection modes: -- ENHANCED MODE Blocks dangerous impulse noise, while enhancing nearby speech and audio -- MOVE MODE Blocks all external noise -- CLARITY MODE Blocks all external noise, while enhancing nearby speech and audio - Industry-leading sound localization for maximum situational awareness and sound detection - Slim earcup design layered with sound barrier technology - High-definition speakers with enhanced electronics - Speed-change battery compartment works with either two AAA batteries or one CR123 battery - 160-300 hour run time (mode dependent) - Noise reduction rating (NRR) of 26dB Specifications: - Style: Electronic - Fabric/Material: Glass Reinforced Polymer - NRR: 26 dB - Quantity: 1 Pair - Battery Type: AAA - Battery Quantity: 2