Sennheiser HDR165 Additional Headset without Transmitter (Black)@7790
http://www.amazon.in/gp/offer-listing/B00SBBJGP0/ref=dp_olp_new?ie=UTF8&condition=new

Closed, circumaural headphones with excellent digital wireless audio transmission
High-quality Sennheiser transducers and a selectable Bass Boost mode for vibrant sound
Intelligently designed controls for maximum ease of use
Ergonomic design for enhanced wearing comfort
PC
9990 @ http://www.shopclues.com/sennheiser-hdr165-wireless-additional-headphone.html
9499 + 50 shipping @ http://www.flipkart.com/sennheiser-hdr-165-accessory-rf-wireless-headphone-rs-system-bluetooth-headphones/p/itmeev5uszqvzbct
9443 @ http://www.ebay.in/itm/SENNHEISER-HDR-165-replacement-2nd-Headphone-for-RS165-Wireless-System-HDR165-/131675396576