ENHANCED BASS: Implemented with 3W total acoustic drivers and ultra-small size produce a wide audio spectrum. Highly quality speaker inside could provide strong bass without distortion even at highest volume, outclassing other similar-sized portable speakers.</br>ULTRA-PORTABLE _ Ultra-compact design and light weight (only 3.15 x 3.15 x 1.2 inch, 4.8oz ); small portable size easy to fit in your pocket and hang on your backpack or baggage,effortlessly enhance your music on the go.</br>EASY TO USE: With multifunction button for power on/off ,play/pause the music and answer/reject/end calls.Simply press the on/off button to automatically connect to the last-connected device and start streaming your music - that's just one step.</br>ADVANCED BLUETOOTH TECHNOLOGY _ High definition Bluetooth 3.0+EDR audio wireless connectivity with seamless streaming, easy and fast to pair with all Bluetooth-enabled devices and outstanding connection range up to 30 feet.</br>BUILT-IN RECHARGEABLE BATTERY / MICROPHONE _ Up to 4 - 5 hours of playing time on full charge and with microphone support hands free calls (answer,reject and end calls) for Apple iPhone 7 / 6s / 6s Plus / 6 / 6 Plus / 5s / 5c / 5 / 4s / 4, iPad Pro / Mini 2 / Mini / 4 / 3, Samsung Galaxy S6 / S5 / S4 / S3 / Note 4 / 3, LG, Sony, Moto, HTC M9 / M8, iPhone, iPad, MacBook ,Samsung,LG,Sony,HUAWEI ect;</br></br>Product Description</br></br><b>IMPORTANT NOTICE We never authorize other seller to sell our BOOMER VIVI products. BOOMER VIVI ONLY sold by "BOOMER VIVI". We received many customer complaints against other sellers for poor quality. If you purchase here and receive from other seller, please report to Amazon and claim for sell fake products and get FULL REFUND.</b><br/><br/> <b>ARE YOU SICK AND TIRED</b> of Bluetooth Speakers that are large, clumsy, average sound, short play time, no microphone, heavy and difficult to use?<br/> <b>The BOOMER VIVI TEAM</b> has taken these issues head on and CREATED the BEST Mini Bluetooth Speaker on the market.<br/> <b>BOOMER VIVI</b> is built with highest quality standards and materials.<br/><br/> <b>Strong Connections</b><br/> The BOOMER VIVI B05 features a very strong Bluetooth 3.0 connection.Super bass speaker with Bluetooth 3.0,you can enjoy the high quality music of 360 degrees surround.<br/><br/> <b>Small Speaker, Big Sound</b><br/> The BOOMER VIVI B05 is only 3.1" in diameter and 1.2'' height, but thanks to its high damping paper diaphragm, this speaker can unleash surprising amounts of sound. Don't be afraid to crank up the bass, the diaphragm is designed to handle the load.<br/><br/> <b>Specifications:</b><br/> Model:BOOMER VIVI B05<br/> Product size:80*32*32mm/3.1*1.2*1.2in<br/> Charging time:About 2.5 hours<br/> Battery capacity:400mAh<br/> Speaker Size:1.5 inch Sensitivity:100db Degree of distortion:1%<br/> Weight:135g<br/> Operating Distance:10 meters( Barrier free)<br/> Work voltage:3.7V-4.2V<br/><br/> <b>Package Detail:</b><br/> 1* bluetooth speaker<br/> 1* USB power cable<br/> 1* Manual<br/> 1* BOOMER VIVI 12-Month Warranty<br/><br/> <b>BOOMER VIVI warranty guarantees that your purchase is 100% risk-free!</b></br><br/>http://www.amazon.com/gp/product/B01N012H5L