Accessories Included: None. Battery Type: None. Brand: Logitech. Features of Product: Two-inch (5.1 cm) high-excursion metallic drivers let you enjoy clear, quality sound in a compact size. Headphone Socket: Yes. Integrated Amplifier: No. Interface: 3.5mm audio jack. Magnetic Shielding: No. No of Batteries Required: N/A. No of Satellite Speakers: 2. Power Option: Mains Only. Remote Control: No. Speaker System: 2. Subwoofer: No. Treble or Bass Controls: No. Volume Control: No. Wall or Desk Mountable: Desk only.