Ages 4–8In action
Demo listing · media to be replaced
Robot Arm Builder
A five-axis arm that picks up a coin, a block and a ball.
Pay the rider in cash. Nothing is charged online.
The decision facts
- Best age
- 9-14 years
- Battery
- Rechargeable 3.7V pack (USB)
- Rechargeable
- Yes — USB charging
- Indoor / outdoor
- Both
- Size
- 34 x 22 x 12 cm
- Noise
- Loud (no volume control)
- Build
- ABS + metal parts
- Repeat play
- High — open-ended
What We Didn't Like
Grabber cannot lift anything heavier than about 100 grams.
In the box
- Arm kit
- controller
- 120+ parts
- guide
What it actually does
A five-axis arm that picks up a coin, a block and a ball. Robot Arm Builder by BuildWorks, sized for ages 9-14. We keep the listing honest: everything below is what we measured on our own test shelf, not what the box promises. Inside the box: Arm kit, controller, 120+ parts, guide. One real limitation: Grabber cannot lift anything heavier than about 100 grams.
Try It Live™
Real clips · no CGIPress a control to see exactly what this toy does. If a button is not here, the toy cannot do it.
See it for real
Reality Mode™
Same toy, normal room, adult hand and child for scale. No studio tricks.


Test Lab
Tested 21 Oct 2026 by ToyWah Test Lab
Drop test
Survived 1m drop onto tile — cosmetic scuff only
Battery
34 min continuous use
Sound
82 dB at 1m
Build
Minor flash on edges, hardware rated for daily play
Age check
Tested with ages 9–14; younger needed help with setup
Parent Verdict
5 verified parentsaverage
- Worth the price80%
- Still played after 30 days80%
- Looks like the video80%
- Would buy again80%
- ★★★★★
Sana M.Verified buyer
Child 11 · 26 Sept 2026
Ordered on a Tuesday, delivered Thursday. Packaging was solid and nothing was loose in the box.
- ★★★
Bilal R.Verified buyer
Child 10 · 27 Jul 2026
Battery life is the weak point, but the play value in that window is high. Only gripe: battery could be bigger.
- ★★★★★
Usman T.Verified buyer
Child 14 · 25 Jul 2026
My daughter is a bit younger than the recommended age and needed help at first. Fine now.
- ★★★★
Hina S.
Child 11 · 28 Sept 2026
Two weeks in and it is still the first toy picked after school. Survived a stair fall too. Only gripe: instructions are thin.
- ★★★★
Mariam J.
Child 9 · 24 Sept 2026
Honest note: the first unit had a sticky wheel, support replaced it in three days without an argument. Only gripe: small parts need supervision.
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