Water Bath: Instrument should be Benchtop, separate glass bowl for water, LED Light, Temperature range from 70 deg C increment in 0.5 deg step, temperature sensor should be available.
Hot Plate: Compact table top model, 20 slide capacity, up to 100 deg C increment in ).5 deg step.
Both instruments should have combined features like digital control, display, USB port, Clock display, day indicator, timer programming.