Magneto-sensitive elastomers are smart materials that change their mechanical properties under the influence of a magnetic field. The method of preparation and characterisation of MSEs by rheological experiments and imaging techniques are presented. Data, obtained through rheological experiments, is used to validate a material model that couples the theories of viscoelasticity and magnetoelasticity. Using model parameters received by fitting the relaxation tests and shear experiments, the behaviour of MSEs in dynamic mechanical experiments under various experimental conditions can be successfully predicted. The material model is validated for small deformations and magnetic fields up to 0.3 T and has been implemented within an in-ho...