Ortega ODWS-1; Digital Wireless System; designed for instruments, 2.4 Ghz digital technology, professional sound quality; 4 operating channels (A, B, C, D), current/charge indicator; rechargeable built-in battery (+2500 charge circuits); latency < 5 ms; frequency range 20 Hz - 20 kHz; for active and passive pickup systems as well as acoustic piezo devices, incl. charger cable