The Coleman Aktiv Sounds CBT50 delivers up to 7 hours of your favorite tunes and has a built-in lithium-ion rechargeable battery so you can continue the party after a quick refresh! Features Bluetooth connectivity for easy music streaming from any compatible device. Dual 5 watt speaker drivers (10 watts total) provide a robust, enhancedand crystal clear listening experience. It's rugged, waterproof exterior makes it extra durable and perfect for both indoor and outdoor settings like, pool/beach parties, camping trips, picnics, or even your home office!