Sennheiser Electronics India Pvt. Ltd offers Wireless Headphone with Three Selectable RF Channels. Sennheiser Electronics India Pvt. Ltd is an ISO 9001:2000 accredited company. The Company also manufactures various types of studio microphones The Wireless Headphone with Three Selectable RF Channels, Model IS 380, is suitable for all types of modern music and TV applications. This Wireless Headphone lightweight and is extremely comfortable to wear. This Headphone frequency ranging from 22 - 19500 Hz. This Headphone has circumaural ear coupling.