Philips Stereo Headphones SHP1900/10. Product type: Headphones, Wearing style: Head-band, Recommended usage: Music. Connectivity technology: Wired, Connector contacts plating: Chrome. Ear coupling: Circumaural, Acoustic system: Open, Headphone frequency: 20 - 20000 Hz. Weight: 200 g. Package width: 9.5 mm, Package depth: 19.6 mm, Package height: 21.5 mm