Breathalysers ( alcohol detectors, alcotesters ) are usually dispatched the same day or the next morning. If you require next day delivery you should make a note during purchase. Next day delivery costs £7 on standard orders and is available for orders placed before 10:00am. Free Delivery applies to UK mainland orders only. In case your ordered breathalyser is out of stock, we will contact you as soon as possible and give you the option to order a different model or cancel your breathalyser order and receive a full refund. On orders from www.ProBreathalyser.co.uk , where your breathalyser is returned to us because of failed delivery, we reserve the right to charge for the return postage on your order. www.ProBreathalyser.co.uk will refund postage fees if the delivery will be not as ordered (different color, quantity or incomplete package) if it will be our fault.