TECHNICAL SPECIFICATIONS • Product name : DMO1 • Audio port: MicrOSD/USB/ AUX • Speaker: Double speakers 403W Ф40 mm • FM Frequency Range: 87.5-108MHz • Frequency Response: 100Hz-16KHz • Battery: 3.7V 1200mAh Lithium Battery • Playback time: up to 3 hours • Charging time: 2.5-3.5 hours • Charging interface: Micro-USB • Input voltage: DC5V-500 mAh • Dimension: 220×70×45 mm • Wireless range: 10 m • Decibel number: 70-85DB