Customer Service

Shipping & Delivery
We use USPS & UPS for delivery. Tracking numbers are updated and you will receive an email. Orders are usually shipped in one business day.
Privacy & Security
We will never share, sell or abuse your email or other personal information.
Returns & Replacements
If you wish to return or refund your order:

1. you can notify us by email to  before we have
dispatched the goods to you;
2. where goods have already been dispatched to you, by returning goods to us in
accordance with clause 3 below.

3. You can return goods you have ordered in the time duration of 30 days
for airtube headsets and cell chips 90 days for qlinks, and earthcalm for a
full refund or exchange plus 15% restocking fee depending upon circumstances.
Invoice must be provided with return. The costs of returning goods to us shall be
paid by customer must be mailed by one of the options of US First Class,
Priority or Express Mail with Delivery confirmation to the address below:

Research Center For Wireless Technology
355 Hukilike Street ( suite 206)

Kahului, Hi 96732