OTTO Engineering, a leading manufacturer of innovative two-way radio audio accessories, to launch the OTTO COVERT series in early 2023. The COVERT series, which includes V1-11565 and V1-11566 low-visibility listen only earpieces, as well as the V1-11569 Surveillance PTT microphone for Motorola APX, is a high-end, durable and versatile solution for police, fire, EMT and security.