DescriptionThis is an awesome wireless subwoofer. Made of premium material for durable use, it offers great quality sound with 4.0 technology. This Portable Wireless Subwoofers superior sound quality is suitable for both outdoor and indoor purposes - for your car, bedroom, living room, kitchen, dormitory, indoor and outdoor party scenes, camps, and more. Features- Color: Blue.- Material: ABS plastic, iron net and silicone pad.- Size: 180x63x44mm / 7x2.5x1.7inch (LxWxT).- version: V4.0.- Speaker: Dual speakers 40mm 4 Omega; 3W * 2.- Sensitivity: le;1%.- SNR: ge;85db.- Rated power: 3W*2.- Transmission distance: 10 meters.- Rated voltage: DC 5V.- phone: Yes.- External LINE IN Speaker: Yes.- TF function:Yes.- USB function:Yes.- Charging time: 3-5 hours.- Playing time: 3-10 hours.- Battery capacity: 1800 mAh.- 4.0 version, it could build faster connection and transmit stable signal in high speed. Dual subwoofer and high performance bass diaphragm, produce more dynamic and thrilling sound field. - Built-in high clear microphone, noise reduction technology, you could enjoy hands-free crystal clear phone calls. This subwoofer support audio cable connection, you could connect with computer, tablet, iPad, MP4, and etc. -Small size, portable, you could carry it around easily, a great company for travel, camping, hiking and etc. - Distinct mids and highs from our two precision acoustic drivers delivers excellent stereo sound and enhanced bass from our proprietary passive bass radiator design. Built-in 2 x 40mm dual driver portable speakerphone with crystal clear sound and strong bass without distortion even at highest volume.- Fashionable and stylish design with solid performance and universal compatibility for Android, iPhone, iPad, tablets, smartphones, iPods, MP3, MP4, radio players, and other enabled digital players or media devices with aux port.Packing list