JBL Dual Set Wireless Microphones

Distance between transmitter and receiver: 10m Polar pattern: Cardioid Frequency response: 65 Hz-15kHz Signal-to-Noise(S/N) ratio: 60 dBA UHF frequency band: 470-960MHz(depends on SKU)(EU 657-662MHz) Receiver input: 1/4"(6.3 mm) unbalanced Receiver maximum Output Level: -13dBV,typical Receiver rechargeable Battery: Lithium-ion Polymer 3.7WH(Equivalent to 3.7V, 1000mAh) Receiver charge time: 2 hours @5V/1A Receiver battery Playtime: Up to 6 hours Microphone battery: 4 x AA alkaline (included)