Eslate or lcd writing tablet to gift to small children.

Hi I am Rupesh from India and I want to gift a small slate to small children in my house.

I found that there is an eslate or lcd writing tablet in market.

Some of them are

https://www.flipkart.com/olipiz-ente...=1658640131812

https://www.amazon.in/PREKRASNA-Port...dexMainSlot=29

The above costs very less ie., 150/- Indian rupees. May I know whether the above has any battery inbuilt.

Please suggest whether I can buy them or not and try to suggest if you know others.

Regards,
Rupesh.

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