These button cells I had for my 7.5m - ordered measuring tape with electronic gauge. Original were there CR2450 Sony it. The button cell of Grundig are obviously higher and above have no rounded edge as the Sony With the inserted coin cell can no longer close the lid of the battery compartment.
Returned to Amazon - no problems due to redemptions and repurchases, although unpacked and packaging had to be destroyed. Thank you Amazon for goodwill.