--- product_id: 658183998 title: "BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years" brand: "brio" price: "£241.64" currency: GBP in_stock: true reviews_count: 1 category: "Brio" url: https://www.desertcart.co.uk/products/658183998-brio-world-33978-smart-tech-sound-waterfall-tunnel-interactive-complement store_origin: GB region: Great Britain --- # Dual crossing options: bridge & caves Immersive waterfall sound effects Sustainably sourced FSC-certified wood BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years **Brand:** brio **Price:** £241.64 **Availability:** ✅ In Stock ## Summary > 🌟 Dive into a world where sound meets adventure—don’t let your train set miss the splash! ## Quick Answers - **What is this?** BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years by brio - **How much does it cost?** £241.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/658183998-brio-world-33978-smart-tech-sound-waterfall-tunnel-interactive-complement) ## 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 - • **Choose Your Adventure:** Cross the majestic waterfall via ramp tracks and rickety bridge or brave the dark, splashy caves. - • **Seamless Compatibility:** Works flawlessly with all BRIO World products for endless expansion. - • **Eco-Friendly Craftsmanship:** Made from FSC-certified wood, blending sustainability with timeless design. - • **Perfect for Early Explorers:** Recommended for ages 3+, fostering creativity, fantasy, and problem-solving skills. - • **Bring Play to Life with Sound:** Sync with Smart Tech Sound Lok for dynamic waterfall and tunnel audio immersion. ## Overview The BRIO World 33978 Smart Tech Sound Waterfall Tunnel is a beautifully crafted wooden train accessory designed for children aged 3 and up. Featuring interactive sound effects when paired with the Smart Tech Sound Lok (sold separately), it offers two exciting crossing routes—a rickety bridge and splashy caves—immersing kids in a rich sensory play experience. Made from FSC-certified sustainable wood, it seamlessly integrates with all BRIO World products, encouraging imaginative play and early problem-solving skills. ## Description The wonderful sounds of the jungle and the soothing splash of running water are the perfect scenery for the Smart Tech Sound waterfall tunnel. In combination with the Smart Tech Sound Lok with recording function (not included), the waterfall can be brought to life with great sound effects. There are two ways to cross this huge waterfall: either over the ramp tracks and the rickety old bridge, or through the dark caves hoping to reach the other side through the splashing water. Interactive functions: On all tracks, fun Smart Tech Sound features await you to expand the gaming environment. In conjunction with the Smart Tech Sound Lok (not included), the Echo Action Tunnel expands the gaming experience with exciting tunnel sounds. More great sound effects can be played on the locomotive via the Smart Tech Sound app. The child can even record their own sounds and invent a completely new, own story. To use the sound functions, the product must be used with the Smart Tech Sound Lok with recording function (not included). Review: Werkt goed - Onze smartec trein was al wat ouder en diende eerst geüpdatet te worden via de brio app. Nadien werkte alles zeer goed. ## Features - In combination with the Smart Tech Sound Lok with recording function (not included), the waterfall can be brought to life with great sound effects - There are two ways to cross this huge waterfall: either across the ramp tracks and the rickety old bridge, or through the dark caves hoping to reach the other side through the splashing water - Compatible with all BRIO World products - Recommended for ages 3 and up - BRIO - Toys bear the FSC label and contain only wood from sustainable forestry ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08XBD33L6 | | Age Range (Description) | From 3 years | | Age Range Description | From 3 years | | Battery Description | Requires battery power | | Best Sellers Rank | #404,773 in Toys & Games ( See Top 100 in Toys & Games ) #422 in Kids' Trains & Railed Vehicle Playsets | | Brand | BRIO | | Country of Origin | USA | | Customer Reviews | 4.0 out of 5 stars 7 Reviews | | Educational Objective | Fantasy development, problem solving ability | | Global Trade Identification Number | 07312350339789 | | Included Components | Waterfall tunnel, ramp tracks | | Is Assembly Required | No | | Item Dimensions | 26.5 x 66.7 x 13.1 Centimeters | | Item Type Name | BRIO Railway | | Item Weight | 902 Grams | | Item dimensions L x W x H | 26.5 x 66.7 x 13.1 Centimeters | | Manufacturer | Ravensburger | | Manufacturer Part Number | 63397800 | | Material | Wood Plastic | | Maximum Recommended age | 1188 | | Minimum Recommended age | 36 | | Model Number | 63397800 | | Operation Mode | Manual | | Power Source | Battery powered | | Scale | G | | Size | 29 x 27 x 14 cm | | Sub Brand | BRIO | | Unit Count | 1.0 Count | ## Images ![BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years - Image 1](https://m.media-amazon.com/images/I/61S99wVXioL.jpg) ![BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years - Image 2](https://m.media-amazon.com/images/I/81a7Bj73I+S.jpg) ![BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years - Image 3](https://m.media-amazon.com/images/I/81KHrNbiXJS.jpg) ![BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years - Image 4](https://m.media-amazon.com/images/I/41hwSqJkGGL.jpg) ![BRIO World 33978 Smart Tech Sound Waterfall Tunnel - Interactive Complement Wooden Train - Recommended from 3 Years - Image 5](https://m.media-amazon.com/images/I/41d+gce29LL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Werkt goed *by B***T on 11 April 2024* Onze smartec trein was al wat ouder en diende eerst geüpdatet te worden via de brio app. Nadien werkte alles zeer goed. ## Frequently Bought Together - BRIO Smart Tech Sound Waterfall Tunnel - Interactive Train Set Accessory | Enhances Motor Skills | Child-Safe | FSC-Certified Wood Material - BRIO World 33402 Expansion Pack Intermediate - Wooden Train Set for Kids | Enhances Creativity | Compatible with All BRIO Train Sets | FSC Certified | Ideal for Ages 3 and Up --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/658183998-brio-world-33978-smart-tech-sound-waterfall-tunnel-interactive-complement](https://www.desertcart.co.uk/products/658183998-brio-world-33978-smart-tech-sound-waterfall-tunnel-interactive-complement) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-23*