Extremely portable?? The classic small and lightweight design makes it convenient to carry wherever life takes you?? fits easily into your bag or pocket so you can use it on the go. Built-in rechargeable lithium battery can be charged via USB cable.</br>Bluetooth v3.0 subwoofer speaker suits the music of different genre. Enjoy an impressively full sound quality and robust bass realized through audio driver and passive subwoofer.</br>Wireless Play?? support Bluetooth interaction control?? one key to play the music from iPad?? iPhone?? Android mobiles by Bluetooth. Up to 6 hours playing time at the volume to 50% volume.</br>Line-in Play?? Equipped with a 3.5mm audio cable for non-Bluetooth devices?? you can connect it to desktop via auxiliary input cable?? which make the desktop also play the loud music even without the Bluetooth.</br>Includes a microphone so you can receive voice calls hands-free?? In Bluetooth mode?? when in