The allinone device equipped with listen technologies exclusive encryption technology and pushtotalk functionality provides the simplest option for communication and collaboration among two or more people in any environment In addition to the included listen ear speaker listentalk can be used with standard smartphone earbuds or a listen technologies headset Features. Fast and simple twoway communication. Pushtotalk functionality. Exclusive encryption technology for added security. Compatible with standard earbuds and listen technologies headsets. Longlasting lithium ion rechargeable batteries. Optional alkaline battery compartmentSpecifications. Weight 1 lbs