Smart glasses company North has told customers that their $600 (£460) purchases will stop working in a few days' time.
The Canadian company, recently purchased by Google, says its Focals glasses will cease functioning on Friday.
From then, owners will not be able to use "any features" of the glasses, or connect to the companion app.
But the company has also said it will automatically refund all customers.
It promised to send the purchase price back to the original payment method, and to contact those customers whose refunds it could not process
Customers found out that meant the smart glasses would be rendered "dumb" through a statement published on the company's website and by email.
The Focals glasses, however, come with prescription lenses as an option, meaning they can function as everyday prescription eyewear. The bulky frames, housing a laser, battery, and other kit will no longer do anything that regular spectacles cannot do.
"That could either mean the service stops working or you end up finding you have to pay additional charges to maintain service continuity."-200730031955914.jpg)
