Standard version has an accurate and balanced frequency response tuning.
Tunable version can achieve 16 different sound styles by adjusting the toggle switch to meet the different needs of more users.
Q: What is the difference between these and normal earphones?
A: D-Fi has a tuning function, buyers can adjust the iem according to their preferences, for example, I really like bass, usually I will turn on four key of adjustment.
Q : How do I tune my iem?
A : Use the tuning needle to dial the tuning button on the earphones, very simple and easy to understand.
Q: Is shipping free? Is there any tax? When will the package arrive?
A: We deliver free of charge, usually no taxes are charged on packages, and most countries arrive in about 15 days.
Q: How can I contact you about the product warranty?
A: We have a one year free warranty service, you can contact "email@example.com" for any questions.
What payment methods does kzheadphone accept?
Kztws accepts Paypal，credit card.
Does kztws save any information when I shop with my card?
No, we don’t save any of your payment information. Our checkout process is 100% secure, and the only information we store is the information we need in order to get you your headphones.
Your address and contact details are automatically saved into our system and a customer account is created for you at the time of placing an order.
But, when you continue to the payment method and choose to pay via card or net banking, you are redirected to our secure payment gateway to complete your checkout.
KZ is to offer you standard shipping and express, no matter where you live. We deliver to hundreds of customers across the world every day, and we strive to provide you with services of the highest level.
If you do not receive your order within the estimated time provided and suspect that the order may have been lost in transit, please contact customer support (Judy@kzhifi.com) and we will initiate an investigation into the order with the courier company. Lost in transit requests must be submitted to customer support within 3 months of the date of shipment.
You can enter your tracking number on the logistics company's official website or the following URL to check.
Tracking website: https://www.17track.net/en
Standard shipping： FREE
Shipping time: 8~20 Days （Depending on the location of your country, delivery in remote areas will be slower.）
Shipping methods: Yanwen、USPS、佐川物流、China Post（Usually tax-free）
Express shipping：30 USD
Shipping time：3-7 Days（depending on the country）
Shipping methods: Shipping via DHL、Fedex、UPS Express ( there may be tax need to pay in this way)
The estimated time of delivery is usually 3-7 Days depending on the country. Includes detailed tracking and confirmation of delivery.
*Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situations:
A. Wrong address or phone number provided by the recipient
B. Recipient was uncontactable when the courier company contacted
C. Refusal to sign for the package by the recipient
D. Lost or damaged parcel because recipient opted for “no-signature delivery”
E. Refusal to pay for the local tax/processing fee by the recipient
F. Refusal to provide supporting documents for customs clearance by the recipient