It followed an alert by a French supplier, Comigel, which is understood to have reported that some of its ingredients did "not conform" to the product specification.

BBC: Asda withdraws frozen burger range supplied by NI company

We should certainly not be introducing product that's not recognised and approved as part of that specification.

BBC: Burgers

"The burger product was specifically produced for the UK market and was made to a specification for EU beef from EU approved suppliers, " the company said.

BBC: Burgers made in an Irish factory are being recalled

The nano does not yet support Bluetooth 4.0 (or any version of the specification), but the standard has been seen as a key component in helping reduce power consumption for such a product, There are also lower power display technologies -- such as Sharp's Memory in Pixel LCD on the forthcoming Meta Watch -- from which Apple has abstained.

ENGADGET: Switched On: Next for the nano