Also you can play music from Micro USB or TF card. With extended antenna, you can connect to FM radio station. This unit is widely used for room for home, office, hotel, etc. It’s recommended to connect with 4 speakers. Stereo Amplifier Module (2 x 15W) connect up to 4 speakers. Connectivity for wireless audio input of iPhone, iPad, smartphones, etc. 1 x Wired Audio Input (on rear PCB). Micro USB and TF card player (at bottom of unit). 1x Wired Audio Output (on rear PCB). Built-in FM radio(87-108MHz). 1 x RS485 connector. Set time to turn on/off the unit. Screw terminations on the rear of the unit for loudspeakers, power and wired line input. Includes in-line power supply. 5 Capacitive Touch Screen(800480). Power Supply: AC100-240V, 50-60Hz. ROM: 1G, Extended Memory card up to 32G. BT Transmission Distance:? 10M. Product Size: 148 x 90 x 50mm (5.83″x3.54″x 1.97). 1 x mounting frame. 2 x screws for mounting. 1 x back box for in wall (H: 54mm). 1 x Micro USB to USB connector. 1 x remote control (cell battery is not included). Package Weight: 0.9kg 1.98lb. Package Size: 20cm x 17cm x 11cm (7.87in x 6.69in x 4.33in).