... digital speaker 1,Support T-Flash card,support MP3 format music 2,canbe connected to mobile phones and audio devices mini digital speaker1,Support ... T-Flash card,support MP3 format music2,canbe connected to mobile phones ... ,can be charged with USB 4,Frequency range:600-12000MHZ5,speaker: 4Ω 1.5w x1 6,Standard plug:Φ3.5mm OEM ...