2.4G bluetooth wireless speaker system(KS168-D)

2.4G bluetooth wireless amplifier system(ks268-d) FUNCTION: 1.It is designed by 2.4G frequency band digital frequency-hopping and codec technology to realise non-string frequency, non-interference. The transmitter and the receiver can be equiped automatically ,easy to manage; 2. It can connect to an external audio input (computer, DVD, MP3), volume adjustable; 3.Two speakers makes a good sound; 4. Can be charged easily with 5V and USB connection interface. 5. The lithium battey supply power to the mic, fully charged 10 hours use is allowed. 6. All full-range cabinets integrate wood material,bright and clear sound. 7. Transmitter linked to either neck or simple clamps,outdoor can be used,handfree completely. 8.Wall-mounted speakers were designed to install on the two sides of the classroom.The output power is 68W. Specification: Tranmitter spec( KS-HB01) Weight: 15g Transmitting frequency: 2.4 2.483GHz Frequency response: 50Hz 12KHz Modulation: GFSK Power supply: 3.7V Polymer lithium battery Battery capacity: 280 mAH Receive way: The bidirectional 2.4G frequency-hopping launches the receive Talking time:up to 10 hours Standby time:up to 200 hours Operating temperature:-30to +50 degrees Receiver spec Transmitting frequency: 2.4 2.483GHz Frequency response: 50Hz 12KHz Modulation: GFSK Receive way: The bidirectional 2.4G frequency-hopping launches the receive Signal-to-noise ratio: ≥85dB Harmonic distortion: ≤0.5% Audio frequency input: RCA-2 Speaker spec Output: 50W rated impedance: 4.0ohms Sound Pressure level: - 90dB Uses the power source: AC 110V-220V 50 60HZ Installing way: wall-hanging Standard optional: categoryaccessoriesquantity2.4G bluetooth MIC(one)KS-HB01transmitterone5V/800mA ChargeroneStraponeReceiverHost speakeroneVice-speakerone220V Charging WireoneSpeaker Mounting Bracketsfour pcs