Tweakers GoRock wireless stereo speakers are the perfect accessory of today's portable electronic devices. Wirelessly stream audio from nearly any portable device to the speakers with Bluetooth wireless technology. Auto connect and easy-pairing convenience provide hassle free connectivity. The built-in rechargeable battery provides hours of uninterrupted music pleasure. If your device does not have Bluetooth capability, you can still use the Tweakers GoRock wireless speakers through the line-in port, which accepts any standard 3.5mm cable (sold separately). Simply connect the 3.5mm audio cable to the line-in port and the other end to the earphone port of the portable device. Have the best of both worlds, using a 3.5mm cable, or wireless streaming. If you need a 3.5mm audio cable, you can get it here.