Perfect as long as one does not change room

Easy to install and to use, it works perfectly when we remain in the vicinity of the transmission box, for against it is another thing when changing room because at that time transmitting suffered many cuts even at 5m of the issuer The helmet is not at all suitable if you plan to wear it and another room, obstacles such as walls it problematic, a little disappointed to buy as much as using the entire apartment was My initial goal