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🚂 Record, play, and grow — the smart train that sparks endless imagination!
The BRIO 33971 Smart Tech Sound Record & Play Engine is an interactive wooden toy train designed for children aged 3 and up. Featuring a unique record and playback function activated by a red button and an orange Sound Action Tunnel, it encourages creativity and auditory engagement. Compatible with all BRIO railway tracks and vehicles, it offers expandable play options that foster spatial awareness and fine motor skills. Built with safety as a priority, it undergoes over 1,000 safety tests annually. Lightweight and compact, this train set is a perfect gift that combines fun, learning, and lasting quality.








| ASIN | B0861WYDMW |
| Age Range Description | 3 Years |
| Assembly Instructions Description | Install the floodline and tunnel. |
| Assembly Time | 15 Minutes |
| Base Material | Wood |
| Battery Description | 2 AAA batteries |
| Best Sellers Rank | #159,102 in Toys & Games ( See Top 100 in Toys & Games ) #291 in Toy Train Sets |
| Brand Name | BRIO |
| CPSIA Cautionary Statement | Choking Hazard - Small Parts, No Warning Applicable |
| Collection Name | BRIO Train Sets |
| Color | White |
| Compatibility Options | BRIO railway tracks and vehicles |
| Control Method | Touch |
| Control Type | Sound |
| Controller Type | Sound |
| Customer Reviews | 3.9 out of 5 stars 1,027 Reviews |
| Educational Objective | Cognitive and emotional development through imaginative play |
| Frame Material Type | Wood |
| Included Components | 33971 Smart Tech Sound Record & Play Engine includes 2 pieces: 1x Battery-powered Record & Play Engine, 1x Sound Action Tunnel |
| Includes Rechargeable Battery | No |
| Inner Material | Wood |
| Is Assembly Required | No |
| Is Electric | Yes |
| Item Dimensions | 11.42 x 4.33 x 5.91 inches |
| Item Shape | rectangular prism, cylinder |
| Item Type Name | Wooden Trains |
| Item Weight | 195 Grams |
| Manufacturer | BRIO |
| Manufacturer Maximum Age (MONTHS) | 120 |
| Manufacturer Minimum Age (MONTHS) | 36.0 |
| Manufacturer Part Number | 33971 |
| Manufacturer Warranty Description | Lifetime Warranty Against Manufacturer'S Defects |
| Material Type | Plastic Wood |
| Minimum Age Recomendation | 36 |
| Model Name | 63397100 |
| Model Number | 63397100 |
| Model Year | 2020 |
| Not for Kids | No |
| Number of Batteries | 2 AAA batteries required. |
| Number of Pieces | 2 |
| Number of Players | 1+ |
| Occasion | Birthday, Christmas |
| Operation Mode | Manual |
| Other Special Features of the Product | Portable |
| Outer Material | Wood |
| Pattern | Single |
| Power Plug Type | No Plug |
| Power Source | Battery Powered |
| Product Style | Single |
| Rail Guage | standard-gauge |
| Remote Included | No |
| Scale | HO scale |
| Set Name | 33971 |
| Size | 13,5 x 2,4 x 5 cm |
| Skill Level | All |
| Subject Character | BRIO Trains |
| Theme | Railway |
| Unit Count | 1.0 Count |
S**A
Replacement train
We bought the brio smart tech set last year for Christmas and the train is starting to get tired. It’s great that there is a replacement train. My son loves this train and the full set is awesome!
J**N
Producto
Excelente producto
A**S
Train stopped interacting after two months of use
We initially loved this train which was purchased for my two year old grandson. After a few months of play the train stopped working properly. It operates on the tracks as normal but stops at each and every interactive item such as tunnels and arches. It does not make sounds anymore or record sound. This item was very expensive and we expected many more years of play from a company such as Brio. I am very disappointed in this item. Now we have a handful of interactive train accessories that do not operate as intended. Waste of money.
S**.
Motor not working
My grandson has been enjoying hours with the toys (and so has his parents!) Bought another Smart Tech piece. Unfortunately the motor on that one was broken. Returning item now but had to ship to England so still waiting to get credit for that. We had to pay the shipping and will get back about 75% of the cost.
T**N
Update the train in the app first!
We’ve had this train for about a year now and my four and five year olds (a boy and a girl) both love it. There are mixed reviews out there because people don’t read the instructions. Download the app and update the train first to load the sounds and movements on it. Then - voilá it works great with all the smart tech pieces. My kids love driving it through the app. You can change the headlight color and record your own sounds. Granted, they like to record fart noises and just say butt over and over on it but still it’s very much enjoyed. Be sure to hold the button down to power on and off. It’s not a quick press. If it isn’t functioning properly consider the batteries. The headlights turn red when they’re low. The engine could be a little stronger but it can pull three or four cars up an incline which is plenty for my kids. It stays on course fairly well too despite three or four different brands of track we use. Definitely a fun buy that has kept their interest longer than I thought. They get bored of playing trains but keep playing because they think recording the sounds is so funny.
D**.
Save your money
This train has cool features and customization options but I would not buy it again. After getting it for my 4 year old for Christmas it has seen heavy play use, requiring new batteries almost weekly (annoying and wasteful), and it has now broken and no longer works (also wasteful). Would not recommend.
K**I
Too high tech for me
Bought because it’s the only train that’s compatible with the repair station my son got as a gift. It’s very high tech and you have to download an app to turn it on and use the first time. You can customize the color of the lights and record your voice on it, but I could never get it to interact to the station we bought it for. It’s very high tech, but for my 4 year old’s purposes, he plays with it the same way as his other battery operated trains. Definitely expensive for what it is.
K**R
Tunnel doesn’t work, DOA?
The train is cute and works well with app, but it has never registered the tunnel that came with it, so the sound doesn’t play when the train runs through it. Not sure what the issue is, but it was disappointing, especially considering the high price for this item. We previously purchased another sound tunnel in a different set and the train registers that one so I supposed we just got a broken one in this set. After reading some reviews, this seems to be a common occurrence.
T**I
La connection entre la locomotive et le pont ne fonctionne pas. or c'est du smart tech
locomotive très chouette
熊**太
録音機能を兼ねて電車遊びは夢膨らみます。
誕生日プレゼントとして4歳の子供に購入しました。ライトが付くので部屋を暗くして走らせていると「夜に見た火の鳥 列車みたい」と大喜び。録音したメッセージもサプライズとして大活躍でした。
M**N
Ridiculous peace of plastic garbage
You can say something in the microphone and then every time the train rides through the thing it will repeat just what you said, fun for five times and then no kid has any more interest in it, so don't waste you money, better give it a away to the poor.
K**S
Fabuloso
Mi hijo está encantado y con la app es todo un puntazo,
P**O
BRIO SMART TECH
Arrivato oggi puntuale il treno si presenta di ottima fattura,si tocca con mano la indiscussa qualitá del costosissimo prodotto e da subito si può notare che non è come gli altri treni sound e light della stessa categoria Qui abbiamo molteplici possibilitá,svariati suoni preregistrati di un'ottima qualitá audio,possibilitá di registrare qualsiasi audio ci venga in mente con risultati eccezionali!!Adesso però viene il bello,con una semplice app scaricabile gratuitamente da PlayStore abbiamo la possibilitá di muovere il treno,cambiare il colore delle luci,registrare gli audio e farlo replicare con la stessa.Abbiamo un ponticello smart che al passaggio del treno fa replicare anch'esso ciò che registriamo, insomma....una valanga di interazioni che unite alla fantasia del bambino possono dare vita ad un gioco pressocchè infinito!!!Trovo i prodotti brio troppo costosi in tutta la sua linea,ma va anche detto,come in questo caso,che LI VALE FINO ALL'ULTIMO CENTESIMO!!!Nessun trenino giocattolo fa o somiglia vagamente a questo!!NOTA DOLENTE: Ci si aspetta che dopo aver speso 40€ la confezione fosse corredata di pile(2 ministilo),ma evidentemente l'azienda ha il braccino corto!Occhio cmnq alle pile che con una sessione intensa di gioco,magari attaccando 20 vagoni al seguito come si diverte mio figlio,Tanti suoni,tante salite etc..dopo circa 3/4 ore si devono cambiare.Penso che si possano usare tranquillamente anche le ricaricabili,ma devo ancora averne la certezza.Vedremo con il tempo anche se resiste ai baby test,cadute,lanci etc....Per adesso vi dico: STRACONSIGLIATISSIMO SE VOSTRO FIGLIO AMA I TRENINI e magari corredatelo con una pista di binari in legno o tutto ció con cui può farlo interagire.FANTASTICO!!
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