URFUNNY Sweat&water resistant Mini Portable Gsm/ Gprs/ GPS Watch Tracker for Kids Real Time Mini GPS Tracker call punction Anti loss 2 Way Talking The item will be arrive before Christmas day if your order made before 16th Dec. Multifuctional phone watch: GPS positioning, AGPS assisted positioning, LBS base station location, trajectory queries, remote monitoring, emergency call, two-way calling,voice massage,calling watch to watch, remote alarm, security fence, etc Our watch support GSM card,SIM card needed but not included, please prepare a mobile phone SIM card including data traffic and CID Upgraded software is easy for use,just Scan the QR-code to install APP ,then register an account and band the watch to the APP and use the function following the instruction Textured food-grade silicone wristband - avoid uncomfortable feeling after sweating; Sweat & water resistant - do not need to take off before washing hands