Product description Material: Plastic Size: 48 * 48 * 45mm Colors: white, black Battery capacity: 300 mA Effective distance: 10 meters Function: Call function, button for the operating mode of the voice prompt Package contents: 1 * small square bluetooth speaker 1 * USB cable 1.Richer Bass & Crystal SoundPortable speakers with advanced digital sound,noise/wind reduction technology, Distinct mids and highs from our precision acoustic drivers delivers excellent 360 all around stereo sound and deep bass from our proprietary passive bass radiator design. Bluetooth speaker built-in speakerphone with crystal clear sound and strong bass without distortion even at highest volume. 2.Mini Portable Size & Powerful Bluetooth speaker is conveniently small and equipped with a portable rope specially which allows you to hang it anywhere. The small speakers able to releasing crystal clear sound with impressive bass and room-filling loudness through a high-performance driver and a passive subwoofer. Small, but such a powerful Bluetooth speaker. 3.Long Battery Life & Fast Charge Built-in a 300 mAh Lithium-Polymer battery, the wireless speaker can play hundreds of high quality music tracks in 6 hours on a single charge. (Playing time is affected by volume and audio content) It can be fully charged in 2 to 3 hours using the included Micro USB cable.It is the perfect companion at anywhere. 4.Anti-Damage The wireless portable speaker is fully sealed designed with indestructible, which is so durable to resist to splashes, falls. Portable bluetooth speaker is perfect for parties, swimming pool, travel, excursions and cycling, and multiple outdoor sports.