Z5 supports 3G, 4G LTE, Bluetooth v4.1 and NFC, it has no infrared port. There is FM radio and dual stereo speakers with volume up to 80dB. The sound is great and worth buying a bit better headphones, because some sounds cannot be heard with the supplied headphones. Memory has a 32GB and is expandable up to 256GB via microSD card. With OTG cable, the device can also serve as an HDD as it supports USB Host.