Strap War Drum 4 Bluetooth Speaker Multifunctional Outdoor Portable High-quality Subwoofer
---Frequency response range100HZ-20KHZ Signal-to-noise ratio≥85dBNumber of speakers2 Effective distance15 metersBox materialABS Appearance size250*120*110MM
--Bluetooth version5.0 Built-in battery capacity1200mAh-2000mAh (inclusive)Rated power10W Net weight1318gRated voltageDC3.7 Additional functionsCard insertionIs there a built-in batteryBuilt-in battery