High-precision power gauging gives momentary digital read-outs of gripping power; Auto capturing of maximum achieved grip power and display of the value * Weight capacity: 90KG\200LB; Power Source: 2 x 1.5V AAA batteries (NOT INCLUDED); Any batteries works except Duracell batteries. * Saving\storage and retrieval of results for different (up to 19) users * Compare current record to the last one; Assesses results according to age and gender * Dimensions: (L)9.65 x (W)6.89 x (H)1.97 Inches