You can return all defective items no more than 7 days from the date of receipt.
Every order is prepared as soon as possible after the payment confirmation (except Saturdays, Sundays and Japanese holidays). It usually take about for 2-5 days over the world, but it will take more days if it stops at a customs.
"To USA and Australia"
It take 3days, but if it stops customs take 4 or 5days in our experience.