‘BUILT IN SUB-WOOFER – The high level of sound experience along with the added Sub-woofer make for an enhanced base experience you won’t find in any other mini speaker. 5 HRS OF PLAYBACK – Take this handheld rechargeable speaker with you wherever you go, with 5 hours of playback you can listen to your favorite music on the go. SHUTTER REMOTE – The Power Button also serves as shutter remote control for the camera app, giving you up to 20+ feet to capture the perfect photo. EXTENSIVE CONNECTIVITY – Utilizes Bluetooth 5.0 technology to pair with any Bluetooth compatible device for quality music anywhere you are SURROUND SOUND – Easily pair any two of our U Boost speakers together. for an incredible surround sound experience!