[UPGRADE to "ADJUST SPEED", "FORWARD" or "BACKWARD"]:– Compared with other ordinary toy trains on the market, our electric train set uses a remote controller;Children can control the “SPEED “of the model train set through the remote controller, and make the Christmas train “MOVE FORWARD”, “PAUSE”, “BACKWARD” and the functions are very rich; You can adjust the toddler train set for kids ages 4-8 to the speed you want, and these features provide convenience and fun for your kids’ games. [UPGRADE to CONTROL "SOUND" and "SMOKE" ON or OFF]:–The upgraded RC train set for under Christmas tree is equipped with REALISTIC LIGHTS, SOUNDS AND SMOKE, which create a realistic driving atmosphere; More importantly, you can also use the remote control to turn the “SMOKE” and “WHISTLE” ON or OFF (please refer to the manual for operation); In addition, the smoke comes from water, so it is non-toxic and harmless. You can let your family play with confidence; The track width is: 6cm (2.36in). [LUXURY TRACK to DIY VARIOUS TRACK SHAPES]:–Easy to set up, play and kid-friendly design; kids only need to assemble the railway into various shapes (circular, oval and luxury layout), and the train sets for boys 3-5 correctly and stably on the track, then turn on the switch, the train for Christmas tree will move steadily on the toy track; The DIY train set for boys aged 4-7 can improve child’s hands-on ability and thinking ability, and can also enhance the parent-child relationship with parents. [DURABILITY, HIGH QUALITY]:–This electric train set for Christmas tree is made of durable ABS; Each component undergoes strict quality control to ensure impact resistance and durability; To ensure your family deserves a fun experience, you can set up the track at the bottom of the Christmas tree or elsewhere; During the holidays, you can also put the Christmas train sets for around the tree to add a festive atmosphere and make your Christmas happier. [PERFECT CHRISTMAS TOY GIFTS FOR CHILDREN]–This boys toy train set is a meaningful gift for every child; Model train toys for boys can not only let your children play happily, but also let them observe the development of industry and technology up close; During the holiday season, you can also put the Christmas tree trains for around tree to add a festive atmosphere; These are perfect birthday, Christmas toy gifts for boys and girls aged 3 4 5 6 7 8 9 10+.