SP Universal Interface

Marsoni

M251S

$49.99

Get it in 3 business days with 1 day shipping. Friday, May 29

SP Universal InterfaceCreate new connections! With the Universal Interface, your existing phone case can be attached to all SP Connect mounts either mechanically or magnetically, depending on the model. Or use it to mechanically mount other gadgets like tablets, speakers and powerbanks. Mount your smartphone or other devices to bikes, motorcycles, in cars, on golf carts, etc. in just one second. This adhesive pad makes it possible. Tip: The perfect solution also for

Easy Shipping

Quick Dispatch:

Your SP Universal Interface orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your SP Universal Interface ships.

Need Help?
Questions about SP Universal Interface, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for SP Universal Interface in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I got a little confused by the reviews since they mix the high back version with the mid back. I thought the arm rests were adjustable and the back had some lean. Apparently only the high back version. That said, it is very nice. Its at least a hundred less than what you'd get at an office depot and it is generously sized and very supportive and comfortable. The assembly was relatively easy, instructions could have been a bit better. The piece connecting the seat and back doesn't sit flush with the mount that attached to the legs which is weird but it feels sturdy nonetheless. Overall it's very nice and the design is really cool, it looks like a 70s race car style seat. Exactly what I was looking for basically. I sort of wish I got the high back version for the adjustable arms and the ability to recline but it is a work chair for me mostly so I guess it doesn't need to lean back, even if it would be nice if it did.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on January 14, 2026