The packaging time refers to the number of business days it will take for the seller to ship out your order after receiving payment. "Business days" equate to normal weekdays. Saturdays, Sundays and major holidays are excluded. Make sure to complete your payment to the seller as soon as possible to receive your order faster. If the seller does not ship the order within the normal packaging time, you will receive a full refund.
The seller must comply with other relevant legal requirements (warranty, return, etc.) that may be applicable depending on your location as buyer. For instance, in most EU countries you will generally have a 2-year legal conformity warranty and a 14-day free right to return (please note that in case of return, the buyer must bear the cost of returning the products to the seller).