The Inbase Boom Plus speaker is designed and engineered for greater clarity, sound, and accurate mids. The Higher Quality Crystal Clear Sound & Features distance it from the competition. Enjoy Crystal clear calls and rock-solid music with a specially designed Graphene Coated Driver. The Volume Booster 5+ watt power AMP pumps out more volume and plays your music with no distortion, even at maximum volume. With its unique TWS Function Amplify your listening experience to an epic level & rock the party by connecting with an additional Boom Pro Speaker. Durable Fabric with Rugged Design suitable for both Indoor and Outdoor activities. With long-lasting battery and playtime up to 4 hours on a single charge. Boom plus is a totally Splash proof, Rainproof speaker; with IPX68 certification the speaker can resist gentle water spray and splash but cannot be partially or fully submerged. Built with advanced components, it produces clean and precise audio, even at the highest levels. The powerful bass response from a compact design that's easy to take with you.