---
product_id: 740140220
title: "Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces"
brand: "mould king"
price: "HK$729"
currency: HKD
in_stock: false
url: https://www.desertcart.hk/products/740140220-mould-king-train-building-blocks-kit-up844-steam-train-train
store_origin: HK
region: Hong Kong
---

# APP & remote control enabled 2XL motor-powered steam locomotive 3357 precision pieces Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces

**Brand:** mould king
**Price:** HK$729
**Availability:** ❌ Out of Stock

## Summary

> 🚂 Ignite your inner engineer with the ultimate steam train experience!

## Quick Answers

- **What is this?** Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces by mould king
- **How much does it cost?** HK$729 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/740140220-mould-king-train-building-blocks-kit-up844-steam-train-train)

## Best For

- mould king enthusiasts

## Why This Product

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

## Key Features

- • **Build & Bond:** Step-by-step easy assembly enhances creativity, fine motor skills, and offers a rewarding hands-on experience for ages 8+.
- • **Next-Level Control:** Dual control options via included remote and FREE MK app—unlock advanced stunts and full directional movement for immersive play.
- • **Masterpiece in Motion:** Authentic UP844 steam train replica with intricate details like chimney, smoke box door, and headlight for a museum-worthy display.
- • **Power Meets Precision:** Equipped with a robust 2XL motor and MK4 battery box delivering smooth, realistic movement on the included 68-inch R104 track.
- • **Showcase Your Passion:** Striking design and smooth lines make it a standout décor piece for your office, living room, or creative workspace—because your desk deserves flair.

## Overview

The Mould King UP844 Train Building Blocks Kit features 3357 pieces to construct a highly detailed, motorized steam locomotive replica. Powered by a 2XL motor and MK4 battery box, it runs smoothly on a 68-inch R104 track. Control is seamless via included remote or a free app, unlocking advanced maneuvers. Designed for ages 8+, it combines creative assembly with a striking display piece perfect for enthusiasts and professionals alike.

## Description

Product description               Mould King 12031 Train Model Car Building Blocks Kit 12031-3357 Piece                  Safety Warning               For ages 8 and up only

## Features

- MOC UP844 Train Set: Based on the real UP844 train, this MOC building block kit is packed with many realistic details and features. Water Closet, Chimney, Wheel, Smoke Box Door, Headlight This classic steam locomotive model encourages you to explore even more of the actual train works
- 【Technology Dynamic Version】2XL motor, 1 MK4 battery box, 1 remote control, 1 LED lighting group, R104 track. Finished model measures 13.6"L x 4.4"W x 2.8"H R104 rail measures 68" / 62.08" Eye-catching appearance and smooth line design make a great decoration
- 【FREE MK APP DOWNLOAD】Not only can you control this train vehicle(included in the package), you can use the app to control the car, move in all directions and unlock other running stunts. LOAD-FREE MK APP - Not only can you control this train with the remote control (included in the package), but you can also use the app to control your car, move in all directions and unlock other performance stunts
- 【Easy to Assemble】This toy set is easy to assemble. Step by set guide allows you to easily find a way to enjoy the fun process. It can train hands-on skills during construction and develop creativity and imagination. It is also a great way to proudly present your model once assembled. Place it in your living room, bedroom, office and add a little fun
- 【Gift Boxed】Building toy with colorful cardboard package is a perfect gift for birthday/children's day/Christmas/New Year construction All of our products have been checked strictly before shipping. If you have any problem with your purchase, please feel free to contact us!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Model Number | 12031-3357 |
| Number of Pieces | 3357 |
| Batteries Required? | Yes |
| Batteries Included | Yes |
| Material Type(s) | Plastic |
| Target Gender | Unisex |
| Manufacturer recommended age | 8 years and up |
| Item model number | 12031-3357 |
| Product Dimensions | 43.18 x 12.7 x 30.48 cm; 4.08 kg |
| ASIN | B0D6KLKC8K |

## Product Details

- **Brand:** Mould King
- **Manufacturer Minimum Age (MONTHS):** 96.00
- **Material:** Plastic
- **Color:** Grey, Yellow, Red, Black
- **Educational Objective:** Creative Thinking
- **Number of Pieces:** 3357
- **Theme:** train toys
- **Cartoon Character:** Train
- **Special Feature:** Battery Operated, Easy Storage, Non Toxic
- **Model Name:** Mould King Train Building Block Kit

## Images

![Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces - Image 1](https://m.media-amazon.com/images/I/719i2Gx2xlL.jpg)
![Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces - Image 2](https://m.media-amazon.com/images/I/71kFJzszjQL.jpg)
![Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces - Image 3](https://m.media-amazon.com/images/I/71Izy10+srL.jpg)
![Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces - Image 4](https://m.media-amazon.com/images/I/71sl1-BJhuL.jpg)
![Mould King Train Building Blocks Kit - UP844 Steam Train Train Set with LED Lighting, Motor, Truck Remote Control, APP, 3357 Pieces - Image 5](https://m.media-amazon.com/images/I/71Csf17VGkL.jpg)

## Frequently Bought Together

- Mould King Train Building Block Kit - UP844 Steam Locomotive Train Set with LED Lighting/Motors/Track, Remote Control/APP, 3357 PCS
- Mould King Shay-Type Steam Locomotive Building Set with LED Lighting, Remote/App Control Model Train Block Kit with Tracks, Engineering Toy Kit for Adults (880 PCS)
- LEGO City Tracks - Train Track Expansion Set - Additional 20 Pieces Compatible with Our Sets - 8 Straight, 4 Curved, & 8 Flexible Tracks - 60205

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**Shop now:** [https://www.desertcart.hk/products/740140220-mould-king-train-building-blocks-kit-up844-steam-train-train](https://www.desertcart.hk/products/740140220-mould-king-train-building-blocks-kit-up844-steam-train-train)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-04*