Baoji where you can buy mobile, trolley battery speaker

Model: Q1 a: a single 6.5-inch woofer active battery box; b: 1800 mA lithium battery, 220V AC charger 8-10 hours, you can use three hours of normal volume, small volume can be used 8 hours; c: 220V AC can use : Built-in battery; 220V battery charging status to use; can external 12V battery; d: comes with USB / SD card port; DVD / CD port; e: with a single wireless microphone; f: karaoke microphone OK, the main channel Independent control keys;