For adult's I'd suggest the Gear S or the galaxy watch active from R2999, for the kids the Galaxy fit as its affordable you may get them for under R4000
make sure you get a good one for safety and secure updates etc most work with Bluetooth unless u buy lte ones which are hard to acquire .... so read up and like everything make a good choice after proper research. age of kids ...family members ...what apps ... security measures etc enjoy the process and take care God bless
