Wireless Lound-Speaker (T78) for classroom etc

Description

Receiver system Output power: *0w Received frequency : Vhf******5mhz *5group Frequency response: **0hz**5, **0hz Frequency stability: **0.**5% Harmonic interference: >*0db Receive mode: Fm S/n: >**0db Noise immunity: Multiple noise-locking Speak specification 4ω 6.5" Dynamic range: >**0db Power source: Ac: **0v***0v, *0/*0hz battery: *2v, 1.2a ac/dc Power protection as cellphone battery *0.1v warning low power; 9v auto-cut dc; *5v full charging auto-protect Up-time **6hours Recharger time: ****2huors Transmitter system Transmission power: *5mw Frequency stability: **0.**5% Transmission frequency: Vhf******5mhz *5group S/n: >**0db Power source: Dc9v Up-time: More than 4 hours Function : 1. Smd electronic hardware, smt technological maintain high quality. 2. Collar clip transmitter, high sensitivity, prevent howling, clear timbre. 3. Quartz surge circuitry, steady frequency without disturbance. 4. *5group vhf******5mhz, no disturbance in frequency, have large scope for selection. 5. When use the dc sudden power off, embedded storage battery auto-work 6. Wire and wireless microphone loudspeaker 7. With digital reverberation