COWIN 6110 Bluetooth Speakers, Portable Wireless Speaker 4.1 with 16W Enhanced Bass, High-End Fashion Aluminum-Alloy Shell, TF Card Support - Black CLEAR SOUND & PERFECT BASS: Built in two 45mm speaker driver and two passive radiation, which provide more stereo clear and loud sound,as well as provide a perfect bass effect, Help you enjoy the melody of every music in this high quality sound. WIRELESS PORTABLE BLUETOOTH SPEAKER: Equipped with the advanced 4.1 Bluetooth technology, the distance of Bluetooth connection up to 33 ft, have a good connection performance,suitable for lounging around the house or other outdoor activities, such as partying,camping,hiking or biking. ENGERGY EFFICIENT BATTERY: Using low energy consumption Bluetooth chip to provide more efficient power application.built-in high capacity Li-ion battery,It can connect with a variety of charging devices,equipped with Micro USB charging cable and 3.5mm Audio Cable,which means you can listen music in any situation. DURABLE and STYLISH:High-end design with aluminum-alloy shell,compared with other materials,metal material can be used more long time,More suitable for outdoor travel and activities used, you do not need to worry about the friction and collision happen between in the Bluetooth speaker and some other hard products during your traveling. WHAT YOU GET: COWIN 6110 bluetooth speakers,micro USB charging cable,3.5mm audio cable, Manual,18-month warranty and Sincere friendly customer service. If you have any problems about our product, just contact with us when you feel free.