---
product_id: 227210620
title: "33974 World-Smart Tech Sound-Action Tunnel Circle Set | Interactive Toy Train Set | Enhances Motor Skills | FSC Certified Wood | Compatible with All BRIO Tracks and Vehicles"
brand: "brio"
price: "$311.10"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/227210620-33974-world-smart-tech-sound-action-tunnel-circle-set-interactive
store_origin: US
region: United States of America
---

# FSC certified wood Battery-powered engine 14-piece set 33974 World-Smart Tech Sound-Action Tunnel Circle Set | Interactive Toy Train Set | Enhances Motor Skills | FSC Certified Wood | Compatible with All BRIO Tracks and Vehicles

**Brand:** brio
**Price:** $311.10
**Availability:** ✅ In Stock

## Summary

> 🚀 Unleash the engineer in your child with BRIO's World-Smart Tech!

## Quick Answers

- **What is this?** 33974 World-Smart Tech Sound-Action Tunnel Circle Set | Interactive Toy Train Set | Enhances Motor Skills | FSC Certified Wood | Compatible with All BRIO Tracks and Vehicles by brio
- **How much does it cost?** $311.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/227210620-33974-world-smart-tech-sound-action-tunnel-circle-set-interactive)

## Best For

- brio enthusiasts

## Why This Product

- Trusted brio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Perfect Gift:** Ideal for holidays and birthdays, sparking creativity.
- • **Eco-Friendly Fun:** Safe for kids and kind to the planet.
- • **Interactive Play:** Endless imaginative adventures await!
- • **Skill Development:** Boosts spatial awareness and fine motor skills.
- • **Expandable Experience:** Compatible with all BRIO tracks for limitless play.

## Overview

The BRIO33974 World-Smart Tech Sound-Action Tunnel Circle Set is an interactive toy train set designed for children aged 3 and up. It includes a battery-powered engine, 8 tracks, 2 action tunnels, and various accessories, all crafted from FSC certified wood. This eco-friendly set enhances motor skills and creativity while being compatible with all BRIO tracks and vehicles, making it a perfect gift for any occasion.

## Description

33974 World-Smart Tech Sound-Action Tunnel Circle Set | Interactive Toy Train Set | Enhances Motor Skills | FSC Certified Wood | Compatible with All BRIO Tracks and Vehicles

## Features

- INTERACTIVE PLAY: The set includes a battery-powered engine, 8 tracks, 2 action tunnels, a figure and a sign, offering endless hours of imaginative play - batteries not included
- FOSTER CREATIVITY: Perfect for the creative toddler, this set is an ideal gift for Christmas or any holiday, designed for kids aged 3 and up, stimulating creativity and imagination
- EXPANDABLE PLAY SET: As your child grows, their railway world can too, with this set being compatible with all other BRIO railway tracks and vehicles, offering limitless possibilities
- SKILL DEVELOPMENT: This train set not only offers fun but also helps improve children's spatial awareness and fine motor skills through interactive play
- ECO-FRIENDLY AND SAFE: Made with FSC certified wood from well-managed forests and passing over 1,000 safety tests a year, this set is safe for your child and kind to our planet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Number of Pieces | 14 |
| Item Weight | 796 Grams |
| Item Dimensions | 40.98 x 60 inches |
| Style Name | Child |
| Occasion Type | gift, Easter, Christmas, Holiday, Birthday |
| Collection Name | Toy Vehicles or Transportation Toys |
| Color | Natural Wood |
| Theme | Transportation |
| Frame Material | wood |
| Base | wooden |
| Material Type | Wood |
| Required Assembly | No |
| CPSIA Cautionary Statement | No Warning Applicable |
| Not for Kids | No |
| Number of Batteries | 2 AAA batteries required. |
| Compatibility Options | BRIO tracks and vehicles |
| Includes Rechargeable Battery | No |
| Rail Gauge | Standard Gauge (1,435 mm) |
| Number of Players | 1+ |
| Special Features | Portable |
| Includes Remote? | No |
| Skill Level | All |
| Is Electric | Yes |
| Power Source | Battery Powered |
| Battery Type | 2 AAA batteries required |
| Educational Objective | Spatial Awareness, Fine Motor Skills |

## Images

![33974 World-Smart Tech Sound-Action Tunnel Circle Set | Interactive Toy Train Set | Enhances Motor Skills | FSC Certified Wood | Compatible with All BRIO Tracks and Vehicles - Image 1](https://m.media-amazon.com/images/I/61JJI2+fY2L.jpg)

## Frequently Bought Together

- Brio 33974 World-Smart Tech Sound-Action Tunnel Circle Set | Interactive Toy Train Set | Enhances Motor Skills | FSC Certified Wood | Compatible with All BRIO Tracks and Vehicles
- BRIO 33973 Smart Tech Sound Action Tunnel Station | Wooden Toy Train Set for Kids Age 3 and Up
- BRIO Smart Tech Sound Waterfall Tunnel - Interactive Train Set Accessory | Enhances Motor Skills | Child-Safe | FSC-Certified Wood Material

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**Shop now:** [https://www.desertcart.us/products/227210620-33974-world-smart-tech-sound-action-tunnel-circle-set-interactive](https://www.desertcart.us/products/227210620-33974-world-smart-tech-sound-action-tunnel-circle-set-interactive)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-27*