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能及优点:MP3、MP4、手机等数码产品理想伙伴;自带300MA的锂电电池,满足你的户外音乐需求,想听就听。产品采用 高质量的音乐喇叭,让你享受音乐乐趣不打折。 Shell materials(外壳材料):QIMEI ABS757 Shell Painting(外壳表面喷漆):PU PAINT spray Speaker(喇叭):MAGNETISM PREVENT(4Ω)36MM×2W Loudspeaker output(喇叭功率):2.2W Rating power:1.85W Frequency response(频率):100HZ-20KHZ Signal-to-Noise:≥85db Distortion(失真):≤0.5% Polymer battery capacity(聚合物电池容量):300MAH Polymer battery charging Voltage(充电电压):4.2V±0.05V Battery Charge time(电池充电时间):DC 5V 200MA—300MA around 2.5 hours; USB 4 hours Battery Discharge time(电池工作时间):MP3 volume in 31mv,about 2 hours;MP3 volume in 20mv,around 8 hours (in the baise of volume level、music rhythm ect long or short of time)