Sillbird UK-900 5-in-1 Programmable Robot Car Kit, 727 Pieces

Programmable: Sillbird UK-900 is a 5-in-1 STEM robot-car building kit listed with 727 pieces, app and remote control, LED eyes and a rechargeable battery. It is intended for ages 8 and up, with several rebuildable models for construction-focused play.

At a glance

The 727-piece set is described as rebuildable into a robot, car, tank and owl, although the title calls it 5-in-1 and the feature list names only four designs.
The listing describes app and remote control, expressive LED eyes and sound effects.
The kit requires assembly and includes a manual according to the stated contents list.
The maker claims up to 40 minutes of play per charge. Actual runtime is not independently established.

Price

£42.49Save 15%

Reference price: ~~£49.99~~

Price checked: 14 Nov 2026

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Often bought together

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Pros and cons

Pros

Multiple rebuilds offer variety beyond a single finished model.
App and remote operation add interactive control after assembly.
The stated included battery and rechargeable design avoid relying on disposable batteries for routine play.

Cons

Assembly is required, so this is less suited to buyers seeking a ready-to-play toy.
The stated play time is limited to up to 40 minutes per charge.

Technical specifications

13 specifications

Identity and kit
Brand	Sillbird
Model	UK-900
Piece count	727
Buildable designs	Robot, Car, Tank, and Owl
Recommended age	8 - 18 years
Assembly required	Yes
Material	Plastic

Control and power
Control options stated	Control it via Bluetooth app or remote
Battery	1 Nonstandard Battery batteries required. (included)
Claimed play time	up to 40 minutes of continuous play on a single charge
Features	LED eyes that change expressions and fun sound effects

Dimensions and installation
Dimensions listed	30 x 19 x 20 centimetres
Weight listed	1500 Grams

What to know before buying

Listing details to confirm

The listing has inconsistent age guidance: the title says ages 8–14, one detail says 8 Years And Up, and another recommends 8 - 18 years. Its 5-in-1 claim conflicts with the four named builds, and model identifier UK-900 differs from manufacturer part number UK901. The listed battery description also says a nonstandard battery is included, while the feature text describes a built-in rechargeable battery. Confirm the selected listing's age range, model and battery details before purchase.

What’s in the box

Included

User manual

Who is it for?

A good fit for

Children aged 8 and over who enjoy building and rebuilding mechanical toys.
Families looking for a hands-on construction activity with app or remote control.

Less suited to

Buyers wanting a toy that needs no assembly.
Anyone needing a verified runtime longer than the stated up-to-40-minute claim.

Sillbird UK-900 5-in-1 Programmable Robot Car Kit, 727 Pieces · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 41 ratings

5 stars67%67%
4 stars30%30%
3 stars0%0%
2 stars3%3%
1 star0%0%

Aggregate ratings are favourable overall, but they are not a substitute for comments explaining how the kit builds or works. The small rating sample includes some lower-star ratings, so buyers should treat satisfaction as varied rather than assume a specific strength or fault. The available ratings do not establish the accuracy of the kit's feature claims.

Frequently asked questions

How many designs can be built?

The listing calls it a 5-in-1 kit but names four designs: robot, car, tank and owl. The fifth design is not identified, so check the selected listing for clarification.

What age is this kit for?

Age guidance is inconsistent: the title gives 8–14, while details state 8 Years And Up and 8 - 18 years. Confirm the intended range before buying.

Does it include a rechargeable battery?

The feature text describes a built-in rechargeable battery and claims up to 40 minutes of play per charge. A separate battery detail calls it a nonstandard battery included, so the exact battery arrangement is unclear.