Product basic info Primary colours: Black Material: Metal Physical properties Number of channels: 1 Depth receiver: 140 mm Height receiver: 40 mm Number microphones: 1 Weight receiver: 920 g Electrical data Frequency stability: ± 0.005 % Technical data Maximum operating frequency: 864 MHz Frequency response: 18 Hz-40 kHz Frequency band type: UHF Operational properties Wireless/wired: Wireless (EN)