Smart watch / bracelet for kids

[Quintrix]

Hi guys. Looking for suggestions for two of the above.

1.Must be waterproof as they will be swimming with it
2. R550 Max. Must be payable with ebucks
3. Must not be pop out style like miband as their wrists are fairly small.

 

["D"]

Apparently they have good batteries, might be waterproof also - here is one review: