ZEALOT S19 Portable Super Bass Stereo Bluetooth Speaker Mini Wireless Subwoofer Supports TF Card Play, has a Microphone and 1000mAh lithium Battery PRODUCT FEATURES: 1). the latest bluetooth 4.2 chipset, more stable bluetooth signal transmission lower power consumption, excellent bluetooth compatibility, operating range up to 10 meters. 2). optimized bionic sound chamber, 52mm full frequency high definition speaker drive unit, presenting surrounded powerful bass and stereo sound quality. 3). Touch Control: processed by laser engraving technology, bluetooth light integrated with sensitive touch control, excellent user operating experience. 4). SUPER BASS STEREO SOUND: Customized high elasticity Metal Diaphragm, with powerful bass, let you feel the air vibration of the sound wave, the resonate of the song. 5). built in 1000mAh big capacity lithium battery, charge 2 hours, offer 1 month standby time, playback time up to 10 hours. 6). built in concealed HD sensitive microphone, support handsfree bluetooth chat support answer/reject call, CVC6.0 noise canceling,delivers clear nature sound. 7). 181g ONLY, mini slim aluminum body, powerful sound, convenient to carry. 8). The bluetooth speaker can be used as a wired speaker by the USB Cable connecting.