DOSS DS-1388 Aluminum Mini Bluetooth Speaker Wireless Stereo Portable Boombox Super Bass<br><br>Features:1. Top grade Aluminum material， heavy but slim.2. Exquisite workmanship. Thickness only 28mm， ultra-thin， easy to carry.3. With dual 3.5W drivers and one imported diaphragm with mesh surface， ensures high performance in high， middle and low frequency.4. 1750mAh rechargeable built-in Li-Battery， extra long working time.5. Supports Bluetooth， Micro SD card and aux in.6. Mobile phone hands-free， easy to answer \/ end up calls.7. Music control. Pause and Play \/ Previous and Next song.8. Suitable for all Bluetooth enabled devices， like for iPhone， for iPad， for Samsung， for Nokia， for HTC， for Sony， for LG， for Google， for Blackberry， other mobile phones， tablet PC.9. Suitable for all 3.5mm jack audio devices， like mobile phone， tablet， computer， etc.<br><br><br><br><br><br>Specification:<br>          Product Name       Aluminum Bluetooth Speaker           Model       DS-1388           Bluetooth Version       V2.1 + EDR           Bluetooth Technology       A2DP， AVRCP， HFP， HSP           Power Handling       3.5W x 2           Input Sensitivity       750mV (+\/-50mV)           Frequency Response       80Hz-20KHz           Distortion       THD&amp;lt;0.5%           SNR       &amp;gt;=70dB           Buili-in Li-Battery Capacity       3.7V \/ 1750mAh           Color       Blue， Red， Purple， Gray， Silver (Optional)           Product Size       180&amp;times;28&amp;times;46mm           Package Size       200&amp;times;50&amp;times;72mm           Package Weight       520g   <br><br><br><br><br><br><br><br><br><br>Package included:1x DS-1388 Bluetooth Speaker1x USB Charging Cable1x 3.5mm Audio Cable1x User Manual