Hps40 o Hps50?

Which of the multimeters HPS50 HPS40 or better? What differences do they have? which of the two would you buy? any advantages? thank you very much

Hi,
The HPS40 is obsolete
However the HPS50 is a better scope because of the screen and battery
The screen is easier to read and seems to have a reduced glare.
The battery is built in and can be recharged it also comes with a power supply
The HPS40 does not have a power supply and does not come with batteries.