(X2 bathroom version).20 square inverter energy-saving constant temperature (V2 bedroom upgrade version).30 square inverter energy-saving constant temperature + air purification (T2 living room upgrade).60 square inverter energy-saving constant temperature + air purification (R2 whole house upgrade).100 square inverter energy-saving constant temperature + air purification Our shop. Support within 7 days of unsatisfactory effect refund full amount of our store. Support 3 years for new + 10 years for the national warranty do not know the choice of version. Please consult customer service Our shop support Huabei credit card payment can be taken on the same day SF sent out (the first day of the New Year also sent)