at this price I do not think there be any reason not to make the purchase . the headphone be well build and provide a effective noise reduction for my 5-hour flight between US and Canada although it be not completely silent . I would say it be more like a 75 % reduction . like some other say the control unit be a bit bulky but ok for I . in term of battery life I be still on the first set of battery after 10 hour of usage . btw , this can be use as a normal headphone with the power turn off if you be in a not so noisy environment .