| specifications︰ | Perfect for listening to phone's music player, MP3, MP4 and PC Designed for music phones with 3.5mm standard interface connector Customized interface connectors are available With power switch Built-in recharge Lithium battery Working time: 3 to 5 hours Charging time: 2 to 3 hours Input voltage: 5.0V Output voltage: 3.7V Output current: 600mA Power: 2 x 2W Frequency response: 120Hz to 18kHz Color: graining black Size: 130 x 53.8 x 61.5mm Weight: 295g
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