SUNMAY Rechargeable Wireless Bluetooth Stereo Speaker Portable MagicBox Handsfree, 20W Output (Dual 10W Drivers) with Enhanced Bass, TF Card Support, Build in Microphone Powerful dual-speaker for excellent listening experience, double 10W Bluetooth Speakers. It is clear and loud and has decent bass tones, mid tones, and high tones Built-in 4400mA rechargeable battery for up to 10 hours of playtime. Also you can use the speaker as a portable power bank to charge your phones. Built-in microphone for hands-free speaker phone calling. Easy to pair - No code/pin needed. 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 have bluetooth capabilities. Sensitive touch button easy to control. You can increase or decrease the volume, skip forward to the next song or skip back to replay the previous song, and answer a phone call