This Certified Refurbished product is tested & certified by Sennheiser to look and work like-new. The product includes all original accessories, and is backed by a 90 days warranty. Includes wireless headphones, wireless transmitter that acts as the headphone charging dock and two AAA NiMH rechargeable batteries.Connectivity Technology: Wireless Lightweight radio frequency (RF) wireless, on-ear headphones for use with TV and Hi-Fi Audio

In-Ear Headphones are perfect for the music listener.In this stylish and compact style headphone. It combine comfort, stability and high-quality audio. Bring you a new kind of auditory sense. Using skin-friendly silicon ear tips more comfortable fit for ear to sound more direct transmission of the eardrum ,and get better vivid and clear sound and bass response.Improve noise canceling performance. The multifunctional button for phone calls and music tracks also control next previous song, play pause music.Hands-free and built in microphone that you can easily pick up phone calls and talk on your phone everywhere and anytime.