511R works as radio earpiece receiver / radio guide receiver for the listener.
Matched with all radio transmitters in BCT category.
Waveband: UHF 600MHz-900MHz (customized); size: 50*22*12mm
Weight: 14g; channel numbers: 18 - 200 channels (customized)
Working distance: 150meters; working time: 7.5 hours
Battery: lithium polymer battery;
charging method: USD cable / charging base
Accessories: plastic hook