Compex Battery Pack for Wired Devices - All Questions

I´ve an old model Mi-Fitness, bought at Spain (Europe, about 8 years ago) (I´m living in the states now) The battery inside says REF 941210 (same reference), but the Typ says 4nh-aa1200B and the Ah 1,2.
Even thought these differences.. Could I get the actual model as a replacement? Thanks in advance