Q: How to solve if I received the second-hand product
A: We have carried out strict comprehensive quality inspection of products. But due to the use of Fulfillment by Amazon service, there is still a small probability that you may receive second-hand products, but please rest assured that once the products received are second-hand goods, such as missing accessories, USB ports break, please don't worry, inbox us now, and we will arrange the delivery of new product without handling fee immediately.
Q: What can I do if I feel the ear vacuum suction is way weak
A: Everyone's sensitivity is different, and the same product may feel completely different for different people. To protect the ears, our product designers deliberately keep the suction power below a safe level. You can resolve this issue by following these tips:
1. Make sure that the silicone tube is not flattened during logistics and transportation, and check whether there is any foreign matter in the silicone tube.
2. Make sure the battery is fully charged.
As a many year's professional ear care brand, we clear there have not a product suit everybody in the marketplace because of the varieties of ear type. We stand by all KDO products, Please inbox us, we will recommend you the most suit product according to your personal situation.