Universal 3.5mm Portable Stereo External Speaker - Stereo Dual channel - Duration: more than 10 hours (depends on battery) - Output: 1W + 1W - 3.5mm stereo connector - 2 speakers: 28mm in diameter - Frequency range: 200Hz - 20kHz - Net weight: 40g or 1.41oz - Size: 80 x 80 x 30 mm (3.35 x 3.35 x 1.18 in) - Impedance: 8ohm - Powered by 2 AAA 3V batteries (not included) Compatible with: -All IPod, IPhone, IPad models -All MP3, Portable Audio Players -All computers/MAC with stereo 3.5mm audio output We specialize in Computer, Electronics Accessories, cables, adapters, switches, etc. Tel: (613) 680-6188 Pick up location: "Cable Link"