Thames & Kosmos 620398 Sound-Sensing Robot STEM Experiment Kit: Build-it-yourself robot with high-tech, screen-free play
Get ready to meet Hero, your new six-legged robot buddy who's all ears—literally! With over 100 parts to tinker with, you're not just building a robot; you're diving headfirst into the cool world of engineering and sound tech. And guess what? Hero's got three super-sensitive microphones that pick up everything from your claps to your favorite tunes (yes, even that off-key singing). Control it with snaps, claps, or the quirky castanet included in the box. Whether you're leading Hero on a follow-the-leader adventure, syncing moves for a dance-off, or battling it out in tug-of-war, this bot's got four play modes to keep the fun rolling. Oh, and its design? Sleek. Those arms tuck away neatly, and that giant, glowing eye can give you some serious side-eye or a cheerful wink. The 52-page manual isn't just instructions—it's a comic-book journey starring none other than your mechanical pal. Hours of play? More like days of 'just one more experiment!'
- Advanced design with 2 motors and 3 microphones
- Hands-on assembly develops fine motor skills
- Four unique play modes for engaging lessons
- Removable stickers for unique personality
- 2025 Tech Toy of the Year Finalist
- 2024 Toy Insider Top Holiday Toy
- Build-it-yourself robot with high-tech, screen-free play
General specs
- Brand: Thames & Kosmos
- Model: 620398
- Seller: Amazon
- product_dimensions: 10 x 4.7 x 11 inches
- item_weight: 1.6 pounds
- country_of_origin: Taiwan
- manufacturer_recommended_age: 8 years and up
- release_date: May 10, 2024
- First listed by seller: 4/3/25
If you are interested in more details, you can find full information on the seller's page.
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Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Thames & Kosmos 620398
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Thames & Kosmos 620501
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Apitor Robot J Programmable robot
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Apitor Robot R STEM education
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STEM Robotics Kit for Kids Build a robot
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Apitor Robot R Programmable robot
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| Brand | Thames & Kosmos | Thames & Kosmos | Apitor | Apitor | Thanos tool | Apitor |
| Model | 620398 | 620501 | Robot J | Robot R | Robot R | |
| Color | ||||||
| Rating |
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| Price | $58.95 | $27.97 | $158.75 | $111.30 | $24.54 | $126.90 |
| Seller | Amazon | Amazon | Joom | Joom | Joom | Joom |
| Update | June 29, 2025 | July 20, 2025 | August 15, 2025 | August 13, 2025 | August 13, 2025 | August 15, 2025 |
| Control | Remote | Remote | Remote | |||
Sound-Sensing Robot STEM Experiment Kit
Julia B.
Dallas, TX
April 11, 2025
As a mom with a busy household, I was looking for something educational yet fun for my kid, and this kit from Thames & Kosmos really delivered. We spent a whole weekend putting it together—it was a bonding experience, and I loved how the manual guided us through with a comic-style story that kept my child interested. The robot, which we nicknamed Hero, has become a part of our daily routine; my kid loves making it follow sounds or dance to music, and it's sparked conversations about how things work. I'm not usually one for high-tech toys, but this feels practical because it teaches real skills without being overwhelming. The emotional payoff has been huge—seeing my child's excitement and curiosity grow has saved me a few times when I needed a distraction from daily stresses. It's not perfect, but for the joy and learning it brings, it's totally worth it. I'd recommend it to other parents looking for a hands-on activity that blends fun with education.
- Pros: This kit from Thames & Kosmos has been a real lifesaver, keeping my child engaged for hours with hands-on building and creative play. The robot responds well to sounds like clapping or snapping, making it feel interactive and fun without needing complex controls. The manual is fantastic—it's like a storybook that makes learning feel like an adventure, not a chore. The design is sleek, with parts that fit together neatly and a cool light-up feature that adds personality. It's sturdy and has held up to a lot of use, which I appreciate.
- Cons: The sensitivity to sound can be a bit too much at times; it sometimes reacts to background noise when you don't want it to. The included castanet feels a bit flimsy and could be more durable. Assembly took a while, and some smaller pieces were tricky to handle, which might frustrate younger kids without help. It seems a bit pricey for what it offers, especially since it requires batteries that aren't included.