Overview of Outdoor Portable Bluetooth Speaker with TF Card Slot and NFC - KD-57 KD-57 is an absolute high-end Bluetooth Speakers. You can play music from any Bluetooth device and transmit sound for each party. Whether iPhones, smartphones, tablets or laptops. The speaker features a very powerful bass and very clean sound. Features Optimal Audio Quality Even though it has small form, dont misjudge the quality of the sound from this speaker. You can enjoy your favorite music, movie and games with optimal sound quality. Bluetooth Connection With bluetooth technology, you can play your music playlist from your phone to this speaker wirelessly. Microphone You can answer call wirelessly tru this bluetooh speaker. NFC Technology With NFC technology, you can to replace the pair of bluetooth devices, or Wi-Fi network configuration via PIN and lock, with just touching the two devices must be paired or connected to the network. Mini Speaker Design It design to look simple and portable. Bring this speaker everywhere you go!