Features: High volume, colorful LED wireless FM radio HIFI sound quality Portable design, shock sound, button control, surround sound. support audio cable connection, LED ABS material FM radio rechargeable battery. Support TF card Support U disk Support MP3 format, continuous playback time 5-6 hours according to the volume. Compatible with a variety of devices, compatible with Android IOS and other intelligent platforms are free to access your mobile phone for IPAD, notebook SPS and other digital devices. Can be applied to, square dance, morning exercise, promotion, street vendor, outdoor activities, family, etc. Specification: Power :50W Battery capacity :2200mAh Operation mode: button version: 4.2+DER, speaker unit 4 inch full range speaker distance: 10-15 meters SNR 75DB Frequency response range :40hz-20Khz Support FM, frequency: 87.8mhz-108mhz Support TF card , Support U disk Maximum 32G Support AUX Input voltage :5v-500MA, power supply interface USB, built-in 18650 battery, replaceable, note that if you replace the battery, you must be an 18650 battery that supports charging. Product net weight :800 Gross weight :595 g Product size :20x14.5x7.5CM Packing size :24x16x10cm Package Includes: 1x Speaker 1xUSB