This BRIO 33971 Record & Play Engine is a battery-powered interactive toy train starter pack that brings dynamic railway play to children aged 3 and up. Use the red record button on top to capture custom sounds and hear them play back as the engine travels through the bright Sound Action Tunnel. Featuring Smart Tech Sound technology, this recording engine responds to compatible Smart Tech accessories with multicolour lights, motion and authentic train effects to enrich imaginative storytelling. Built to handle heavier loads and easy for small hands to operate, this durable locomotive integrates smoothly with wooden and modular track layouts. This premium-feel interactive engine supports creative play, language development and extended role-play sessions.