The PDR-100 was designed with Military, Public Safety and Commercial applications in mind. Designed with a rugged housing and durable underwater speaker, this Portable Diver Recall system is made for a long working life under harsh environments. The PDR-100 includes everything needed to get started: The PDR-100 Unit, Underwater Speaker, Battery & Charger. MADE IN USA Transmit a Solid Tone or Siren Recall 300 Meter Range Includes Rechargeable 12V NiMh and Smart Charger Easy Hand Held Operation Visible Muilti-Color LED Battery Status Indicator Entire System is Packaged in 1 Small Padded Carry Bag Removeable Speaker Used by US Military Forces 1 Year Warranty