About Us

About Us


SeaPower is a fast-growing startup using leading technology in phone testing and grading in Asia. We turn inventory challenges into business opportunities. 

We built an integrated system that changes how trading business used to be done.  With such a powerful and highly efficient system, we are able to provide pre-owned wireless devices with inspection certificates to retailers and e-commerce sellers. We keep all the testing data transparent of each and every device. More importantly, we are becoming a stable source for quality pre-owned devices. 

The used smartphone market is actually much larger than most people have expected. However, the major pain of selling pre-owned phones is the lack of transparency in terms of pricing and grading standards. With extensive experience in serving clients from all over the world, mainly in the USA and EU, Infinity A Grade has built a solution to this challenge.

Here is a full description of each grade:

Consistent and Transparent Grading Process and Standard。Thanks to the automated and computerized system, the grading process is clear and can be executed precisely.

A Grade

Like ‘Brand New’ condition, 100% fully functional as new devices. Almost or even no trace of use and scratches.

B Grade

In great condition, 100% fully functional as new devices. It may have a slight trace of use and light scratches.

C Grade

 In good condition, 100% fully functional as new devices.It may have some serious scratches and dents on the casting and minor scratches on the screen.

We sell used mobile phones,
Including batteries
For all mobile phones with conditions, we can only confirm that all components except the battery are fully operational.
We added a battery replacement service to the USD15.
Please contact us before purchasing.

(delivery by express delivery)
Please confirm that your address and phone number are correct
Usually the item will be shipped within 1 business day of receipt of the payment.
* Postage is only available from Monday to Friday (except public holidays).
All orders for the weekend will be scheduled on the upcoming Monday.

(contact us)
If you have any questions, please feel free to contact our team: myseapower@outlook.com or 0086-755-86394760,Paul

(our office location)
No. 1511, Huilong Center, Mintang Road, Longhua District, Shenzhen, China

⬇⬇Opening hours
Monday to Friday from 10 am to 8 pm
Saturday 10 am to 3 pm
Rest on Sunday

(Follow us at Istagram)

Thank you, have a great day with us.