PERFECT FOR: video production, stage production, boat operators, drone operators, construction sites and more!. GREAT CLARITY: Noise-cancelling microphone that automatically mutes when pivoted upwards; high-quality voice communication even in high-noise environments. EXCEPTIONAL PERFORMANCE: Up to 1,000 ft LOS wireless range; up to 6 hours of talk time on a single charge; pivoting microphone allows for the headsets to be worn on either left or right side. HANDS-FREE FULL DUPLEX: Wireless headsets operate on 1.9 GHz frequency to avoid interference with other devices; allows for simultaneous communication for 2 users. INCLUDES: 1 ULSM Single-Ear Master Headset, 1 ULSR Single-Ear Remote Headset, 2 Rechargeable Lithium Batteries, Dual Bay Multi-port Charger, Softside Case, Solid Signal Cleaning Wipes.