Come and Check Our Branding Solutions.High capacity,4 hour powered by a built-in high capacity power. The Bluetooth speaker supports Bluetooth Connection and USB port. You can enjoy music for multiple connection ways. Experience your music in full-bodied stereo realized through high-performance drivers. This portable speaker is made of Aluminum Alloy, absolutily not same to the other plastic speakers on the market. small size and lightweight. Pls check inventory and detailed info before placing your orders.