Features： 1、Good Performance: Outdoor camping bluetooth speaker has stereo surround, high volume, subwoofer effect, good sound quality, good music experience. 2、Compatible Devices: Bluetooth speakers can be well compatible with mobile phones, computers, tablets and other Bluetooth devices, easy wireless connection, compatible for Windows, for Android, for IOS and other operating systems. 3、Supported Device: Portable bluetooth speaker supports Bluetooth, U disk, small memory card, microphone, etc., allowing you to enjoy the beauty of music. 4、Wide Range of Applications: Outdoor portable bluetooth speaker is widely used in dinners, picnics, teaching lecture halls, walk radio, K song singing, etc. 5、Reliable Performance: Built in rechargeable lithium battery, capacity 1800mAh, transmission distance is about 10m / 32.8ft, signal to noise ratio of the whole machine is greater than 75db. Specification： Item Type: Portable Bluetooth Speaker with Double Subwoofer Product Material: Plastic Color: Silver Grey Weight: Approx. 720g / 25.4oz Product Size: Approx. 26x13x10cm / 10.2x5.1x3.9in Battery: Built in Rechargeable Lithium Battery, Capacity 1800mAh, Shipped with Built in Battery Voltage: 3.7V Charging Input: DC 5V Bluetooth Version: 5.0 Bluetooth Frequency: 2.4GHz-2.48GHz Transmission Distance: Approx. 10m / 32.8ft Frequency Response Range: 50Hz-20KHz Signal to Noise Ratio of the Whole Machine: Greater Than 75db Package List： 1 x Audio 1 x Data Cable