** This item has been discontinued by Plantronics / Poly. For the direct replacement for this unit please search for part : D200 in our search bar on the website. Poly CA22CD-SC is a wireless PTT (push-to-talk) headset single channel with a PJ-7connector. CA22CD-SC is designed to provide wireless encrypted communications and PTT functionality for mission critical radio dispatch applications such as police, fire stations. air traffic controllers. This Poly CA22CD-SC Comes with extra lithium battery for 24/7 operation with the highest level military 256-bit encryption available. 3X less latency PTT (Push-To-Talk) than other models - MPN 8K774AA#ABA Key Features: PJ-7 connector Talk time up to 10 hours Wireless range: Line of sight up to 100 ft/30.5 m Military level FIPS 140-2 listed 256-AES encryption DECT 6.0 Operates in 1.92 - 1.93 Ghz Two charging wells (a spare battery included) Battery recharge time: 2 hours to full, capacity 440mAh Selectable locking/non-Locking operational PTT modes Wideband 100 - 6800Hz Status LED lights for Power, Battery Charging and PTT Analog and USB connection ports on the base Sending and receiving volume controls on the base Supported systems: Most manufacturers of Voice Communication Consoles, such as Frequentis, Indra, Sitti, Motorola, etc. Quick Disconnect™ provides compatibility with all Plantronics H series headsets