Hercules i-XPS 120 Outdoor Speakers for iPod (Black/Silver) 1st speaker system with water and dust resistance (IP 53 certified: Protection against water spray and dust) certified under the Made for iPod license 2 water-resistant 3-Inch magnetically shielded broadband drivers Compatible with iPod Nano (1st, 2d, 3rd generation), iPod Mini, iPod (30GB, 60GB, 80GB), iPod Classic, and iPod Shuffle via line input Total output power: 12 Watts RMS (2 x 6W) Watertight front door to protect the MP3 player