Crystal-clear, high-quality sound: Distinct mid and high frequencies from our dual precision acoustic drivers deliver excellent stereo sound and enhanced bass from our exclusive passive radiator design. Built-in 2 x 40mm dual driver portable speaker with crystal clear sound and strong bass without distortion even at the highest volume Louder volume and more bass: the small speaker could deliver 30% of more volume and richer bass than other competitors. The 3W+3W HD Crystal Clear Deep Bass Speaker for Outdoor and Indoor Active Use: Room-filling sound, perfect for home, dorm, kitchen, bathroom, car, parties; streaming music or Internet radio s such as Pandora and Spotify Bluetooth 5.0: Bluetooth reception range up to 10m gives you the fastest and most stable bluetooth operation. With built-in microphone, answer a call by pressing the button on Bluetooth speakers. Also support MP3, WAV, WMA, FLAC format to micro SD/TF card, and you can it with other device, such as PC, apple, mac and tablet by 3.5mm AUX cable (provided) /p>Ultra portable: less than 13 ounces, the size of the Portable Bluetooth Speaker: 7x2.5x1.7 inches. Large capacity 2000 mAh rechargeable lithium battery allows a maximum of 6 hours of playback at 2/3 volume and a full charge. Suppot TF Card/U Disk to play and store music files, so you carry the media library. Integrated FM radio. Much better for traveling and hiking One size fits all: 18*4.4*6.3cm Color blue Quantity delivered: 1 coin