BEAUTIFUL DURABLE WIRELESS BLUETOOTH MIC AND SPEAKERS, OUD OD KM-1504 FM OUTPUT POWER :-3 W FREQUENCY RANGE:- 100 HZ – 10 KHZ MAX SOUND PRESSURE LEVEL > 115 DB 1 KHZ TDH <1 % REVERBERATION MODE:- SOUND EFFECT REVERBER POWER SUPPLY:- BUILT IN 18650 LI BATTERY BATTERY CAPACITY:-1800mAh CHARGING P:- DC 5 V 6 month warranty
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