ChiTronic Sardine Airship SDY-021 HiFi Bluetooth Stereo Audio Speaker Music Player FM Radio + Alarm Clock,Black+Red Powerful and portable. Full sound with rich bass. Bluetooth for audio and hands free function. FM radio tuner with alarm clock. LCD display. USB Stick and Micro SD card playing functions. 3.5mm Line in and Micro USB charging port. Remarkable sound quality: Solid construction with Subwoofer. Coaxial 66mm subwoofer with 40mm tweeter. Full range sound including ENHANCED BASS. Rubber base pad that transmits sound to solid surfaces for enhanced audio. Built-in Rechargeable Battery for over 3 days standby and up to 14 hours of playtime. Built-in microphone for hands-free speaker phone calling. Intelligent female voice announcement for connection and incoming call information. Micro usb charging port allows speaker to share many cell phone chargers. LED display with FM Radio and clock and alam function. Support Micro SD Card, USB Stick and 3.5mm line in play. Support MP3, WMA, WAV, APE and FLAC format. Comes in a very attractive box and includes micro usb charging and 3.5mm line in cables.