After placing your order, you will receive an order confirmation via email, SMS or WhatsApp. Orders are processed within 48 hours from Monday to Friday. Orders placed on Saturday, Sunday, or holidays will be processed on the following business day.

When your order has been shipped, you will receive an email/WhatAspp notification from us, including a tracking number you can use to check its status. Please allow 48 hours for the tracking information to become available.

Most orders will be delivered within 5~7 business days. However, it may take more days during festivals or sales.

COSTAR products are covered by a (1) one-year limited warranty against manufacturing defects from the date of delivery. Read our Warranty Policy here

Please fill out this form to activate your warranty.

You can exchange or return the product within 7 days after delivery. Read our refund policy here.

Active Noise Cancellation (ANC) is a noise canceling technology system to remove unwanted background noise while using earbuds. Microphones capture unwanted background noise, and use matching sound waves to neutralize and reduce it.

ENC stands for Environmental Noise Cancellation. ENC is similar to ANC, but specially tuned to remove unwanted background noise while using the microphone. It's like ANC, but for your microphone, ensuring others won't hear your background noise when speaking.

Transparency Mode allows you to hear surrounding noise as if you weren't wearing earbuds. It benefits those wearing earbuds while commuting, exercising, and other activities