Portable laptop mini speaker in Shenzhen 1.570mAh Li-ion cell ... +3.5mm Jack 3.CE,RoHS 4.Speaker: 3Wx1 Portable USB Mini Speaker in Shenzhen Features: 1.USB Mini ... Phone/Computer ,etc 2.Stylish&elegant design, Fold speaker, portable speaker 3.Excellent audio effect 4.BuiLd-in battery & USB ... , play continuously for 4 hours. 5.TF card readability—portable speaker 6.certificate: CE, ROHS, 1 years warranty 7 ...