Wireless translation system receiver. Five channels, based on frequency separation, the reciver is a superheterodyne, very similar to TESLA Zuzana ( T2710B) pocket radio. Some parts are generic from this radio, too (e.g. the plastic box, PCB layout, IF transformers). The receiver has a pretty good sensitivity and good channel separation (tested). Runs on a 9V 6F22 battery, uses a single-ear headphone.
Produced in the end of sixties / begin of seventies by TESLA.