SUNMAY Wireless Bluetooth Speaker HD Stereo Sound BoomBox Dual Speakers Output 20W (Dual 10W Drivers) Ultra Strong Bass Rechargeable Portable Charger for Smartphones Equipped with the advanced Bluetooth technology, compatible with all Bluetooth-enabled devices Built in 4400mA Rechargeable Battery for up to 10 hours of playtime. Built-in microphone for hands-free speaker phone calling Easy to pair - No code/pin needed Enjoy a high definition stereo sound with a impressive volume. And our speaker also can be used as a portable power bank With the ultra-compact size and the soft touch rubber design, it can be easily fitted into a backpack, suitcase, or a travel bag. Plays all Audio devices through 3.5mm Aux in Jack. You can get an audio cable for using the speaker with you computer, laptop, mp3 player or any device that doesn't have bluetooth capabilities.