WHY WE RECOMMEND MPOW 059 SET TO YOU: More convenient for you, Mpow 059 Bluetooth Headphones Set contain bluetooth 059 headphones, bluetooth transmitter and portable EVA carrying case. It's more convenient connection to TV/ PC, and also you can take and carry your tunes anywhere. MAKE YOUR TV & DESKTOP WIRELESS: Plug the Bluetooth transmitter into your a 5V standard charger and connect it to the TV via the provided AUX cable or plug it into desktop, then pair it with Mpow 059. PLEASE NOTE: 1.ONLY the Bluetooth headphone and the Bluetooth transmitter both in pairing mode, they can be successfully connected within 33 feet; 2.The Mic will NOT work when the Bluetooth headphone pair with Bluetooth transmitter. IMPRESSIVE SOUND & PLEASE NOTE: 1. This item is passive noise isolating, NOT active noise cancellation (ANC), it can't cancel the noise completely but it won't drain the battery and damage the sound. As an additional factor of sound quality, it is better than ANC. 2. The closed-back design provides immersive Hi-Fi sound with CSR chip and 40mm driver together. If you care more about Noise Cancellation than Sound Quality, you may consider other alternatives.

Detachable 1.2 M with mic, Kevlar cable Frequency range: 15 hz - 25 kHz, impedance: 26 ohm, sensitivity 103 db. 1khz/1mw Fully serviceable, only screws used in the build of the headphones