With up to 14 hours of runtime,1 the DEWALT Rechargeable Mini Bluetooth Speaker is built for job site listening, with rugged housing and an IP67 rating for dust and water protection. Using a 5V 1A power supply (not included), the speaker can be charged in as little as two hours, and users can link two speakers for stereo-style sound. The carry strap and buckle allow for convenient transportation and storage, and the speaker fits standard cup holders (less than a 3-inch diameter).