This smart watch needs to be charged very rarely as the battery life is 72 hours. It has a screen size of 1.40 inches.
From Amazon
XPLORA XGO 2 - Watch Phone for children 4G - Calls, Messages, Kids School Mode, SOS function, GPS Location, Camera, Torch and Pedometer - (Subscription Required) (GREEN)
Ecprof
XGO2EUSFGREEN - XGO 2 Kids Smartwatch w/ GPS -Green