Bluetooth Speaker, DLAND Portable Color Changing LED Light Wireless HI-FI Surround Stereo Sound Bluetooth Speaker Speakerphone for Home and Outdoor Party/Beach / Picnic Multi-Function: bluetooth Play function/ Micro SD card and TF(up to 32G) Play Function/U Disk Play Function/Color changing LED light/ Listen to non-Bluetooth devices as a wired speaker with included 3.5mm audio cable. Good noise isolation which reduce outside noises and enable clearer sound to create the optimal environment for listening to your favorite tunes,built-in microphone with echo and noise cancellation from mic for clear calling and friends chatting Rechargeable & Removable Lithium Ion Battery , 1200 mAh battery supports up to 8 hours of continuous music time . Easy access to Handfree Talking / Volume up / Volume down / fast forward (skip) / Backward / Pause / Play / Power buttons/Mode switching. The light pattern is adjusted and danced by the sound,flash rainbow multi color flash light unique for your music, videos, games and gatherings,party,bar,nighlight use. Bluetooth 3.0 technology provides high-fidelity stereo music works with all Bluetooth-enabled devices such as iPhone, iPod, iPad Mini, iPad Air 4/3/2, iTouch, Blackberry, Nexus, Samsung, Other Smart Phones, Mp3 Players, and Computers Laptop or Desktop etc. Bluetooth Version:3.0 Size: 4.25&#034; *1.38&#034; *1.57&#034; Power Supply:1200mAh Working voltage / current: 3.3 ~ 4.2 V Charging voltage / current: 5 V DC Battery type:Lithium Battery Music Playing/Talking time:8 hours Charging Time:3-4 Hours Transmission Range: approx 10M Audio Selection:Bluetooth Speaker Built-in Microphone for Hands-free calling Up to 8 hours of music/talking time. Recharge in just 3-4 hours with the Micro USB cable. micro-SD Card(up to 32G) Slot and U Disk slot Allows Music Playback From Various Source. Compatible with all Bluetooth-enabled devices,Also built-in 3.5 AUX port is friendly for non-Bluetooth devices.