Letsbuy.com is a cheater company... they never resolve any problem. I bought BP monitor machine and found that machine is not functioning properly. After various rounds of telecon and mail exchange, they always say you have to go to service center, whereas service center says you have to contact the person who has sold it to you, other wise to entertain any complaint the service center will charge me. Now where the hell should I go with this defaulted machine... these companies should be closed down who can not take up their responsibilities.