Describing gadgets

Wind-up and solar-powered radio - no more _____ batteries!

Does your mobile phone seem old and ____? Click here to view our last models.

A powerful torch that's small and _____ to carry around in your pocket or handbag.

Uses widely-available free Wi-Fi, making it an _____ way to access the internet.

Our competitors' models have proven to be ____ and break easily, so make sure you get our more durable models now.

No one has ever reported a problem using one of these - that's how ____ they are.