Then Volkano True Wireless Portable Bluetooth Speaker delivers high quality, crystal clear sound. With four ways to listen to music, you'll be spoiled for choice and never bored with this Bluetooth Speaker. The Boombox has Bluetooth 5.0 to connect to a device from a range of 10m plus a USB flash drive port, SD memory card reader for digital MP3 audio files and an Aux (3.5mm) input jack with an included audio cable for seamless connection. Enjoy up to 3 hours of continuous audio playback with the 1500 mAh built-in battery, recharge to 100% in 4 hours with the included Micro USB cable. Specifications Connectivity: Bluetooth, auxiliary & USB Subwoofer diameter: 3 inches Bluetooth range: 32ft Battery type: Rechargeable Lithium Polymer Battery life: up to 3 hours Dimensions: 29 x 11 x 12cm Weight: 1.37kg