Perfect Child Smart Watch: A child"s watch is like a smartphone. High-definition 1.44" color touch screen. Support any language, double talk, built-in nano SIM card slot, a separate phone connection at any time with your children. Easy to use: just insert the SIM Insert the card (not included) with the watch fully charged, and press and hold the power button for three seconds to access the operation page.It is the best choice for birthday gift. Specially made for kids : Built-in two-way HD call, camera, recording, calculator, 7 fun games, music box, alarm clock, etc. You can talk to your child anytime, anywhere, express your feelings, and have parent-child interaction anywhere. Support micro SIM card: You need to purchase a micro SIM card that supports 2G network and enable GPRS function and caller ID function, we recommend using SIM cards in Germany: T-Mobile, Vodafone, O2, E-Plus These Net Zwerk Compatibility currently only supports 2G.