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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
Stirling Engine Model Science Experiment Kit Small Production Kitnote: the color of the bulb is random. thank for your understanding. Features: . Exquisite Appearence: The stirling engine model looks cool and high end. Exquisite appearance with brilliant colors, realizing the dual combination of texture and aesthetic feeling and highlighting exquisite workmanship . High Quality: The base is stable and steady. Heating cylinder and power cylinder are beautiful and durable. The piston does not wear out at high speeds
note: the color of the bulb is random. thank for your understanding.Features:
.Exquisite Appearence: The stirling engine model looks cool and high end. Exquisite appearance with brilliant colors, realizing the dual combination of texture and aesthetic feeling and highlighting exquisite workmanship
.High Quality: The base is stable and steady. Heating cylinder and power cylinder are beautiful and durable. The piston does not wear out at high speeds for long periods of time.
.Combination: he Stirling engine body is fitted with a small generator. Additionally equipped with alcohol lamp, 5V5W big bulb, more interesting
.Interesting: Put the engine model on the horizontal and inject 2/3 alcohol into the alcohol lamp. Lit an alcohol lamp to preheat the cylinder for 30 seconds to 1 minute. The flywheel is assisted by hand to drive. Toggle the flywheel by hand, then the dry air expands to generate power to drive the flywheel to rotate rapidly, and light the bulb.
.Fuel: 95% alcohol should be used in the operation (not included), not water, kerosene, gasoline, lighter oil, liquor.
.Meaning and Value: The product has been assembled. You can operate directly, simple and convenient. By operating the engine, you would observe and know the operational process and more intuitive understanding of the operating principle of stirling engine, deepening your interest in physics; Its superior quality and exquisite appearance also make it of high collection value, which can be used as a high-end decoration or gift.
.Suitable for people over 12 years old
.Warm Tips: Be careful during operation.
Specifications:
.Color: As Shown
.Material: Metal
.Product Size: 16.5 x 9.5 x 9.7cm
.Product Weight: 370g
.Package Dimensions: 18 x 12 x 14cm
.Package Weight: 500g
.Packing: Carton Box
Package Content:
.1Set x Engine Model
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.5 ★★★★★
Based on 2131 reviews
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Product Reviews
★★★★★ 1
Toxic ingredients
Size: 2 Fl Oz (Pack of 1)
There are endocrine disruptors in here that are harmful to your health. I nearly got to the point of being disabled from endocrine issues. Has ingredients that ruin fertility, raise risk of cancer, and ruin your endocrine system. I hope these brands can take these ingredients out and begin to care about consumers health.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Returning customer! :-)
Size: 2 Fl Oz (Pack of 1)
I love this product. The size is perfect, it smells amazing, and my skin has no reaction to it whatsoever (aside from what it’s supposed to do). So just a little background, my mother is Caucasian- my father is African American. I can either get a sun burn or get super tan- all depends on what products I use while under the sun.
In the past, low quality products have given me a sunburn over a period of long sun exposure. Contrary to that, high quality products require me to apply less and will prevent me from sunburns. I do have to reapply, depending how much sun exposure I am getting.
I originally purchased this product for a week long trip to Mexico with my boyfriend. I only bought 2 bottles- and we spent A LOT of time on the beach/ getting sun. We both used the sunscreen and STILL HAD LEFTOVERS after our trip (half a bottle still full). In addition, neither of us got sunburns- he got a nice sun kissed glow and I got a tan!
It is TSA carry-on approved, very lightweight, and easy to use. I would recommend this product to anyone who asks! 10/10 will repurchase again :-)
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Reviewed in the United States on May 20, 2024
★★★★★ 5
Works & smells great!
Size: 6 Fl Oz (Pack of 1)
Works & smells great!
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Great smell
Size: 2 Fl Oz (Pack of 1)
Smells amazing, and goes on clear
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Reviewed in the United States on June 1, 2026
★★★★★ 5
“Holy Sun Protection, Batman! This Stuff Works!” 🦇🦸♂️
Size: 6 Fl Oz (Pack of 1)
The COOLA Organic Sunscreen SPF 50 Sunblock is the real deal. It goes on smooth, absorbs quickly, and doesn’t leave behind that greasy, chalky layer most sunscreens do. I put it to the test during a full day outdoors, and it held strong—no burns, no irritation, just solid protection.
What makes it even better is the formula: not overloaded with harsh chemicals, but still highly effective. It feels more like skincare than sunscreen, which makes reapplying far less of a chore.
If Batman and Robin swapped their capes for beach towels, this would be the sunblock in their utility belts—powerful protection, clean ingredients, and a formula that actually works when the heat is on. 🦇☀️
Would you like me to also create short funny one-liner summaries for each review (like quick taglines), so you have both the full review and a quick punchy line to use?
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Reviewed in the United States on August 19, 2025