All products are unconditionally guaranteed by Diolan. If product has not performed to your satisfaction, you can simply return the undamaged unit within 60 days period with the original sales receipt to the distributor from whom the unit was purchased and your money will be promptly refunded. Refund do not include shipment costs. You can also request the exchange of your broken (not properly working unit) with new one. This warranty applies only during normal use and care and is absolutely void if the product is misused, neglected, damaged, altered, or repaired by someone other than Diolan.