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LL-015 γ-Type Mirror-Reflective Thermal Hot Air Stirling Engine Generator Model with LED Bulb Science Discovery Education STEM Toy
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Express delivery: 7-12 business days |
Standard delivery: 15-25 business days
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Welcome to Roymall, your professional website for purchasing premium department store gifts. We highly value and appreciate your support, and we want to express our gratitude by adding an extra touch of excitement to your purchases. When you shop with us, you not only get to enjoy high-quality products that enhance your lifestyle, but you'll also receive an exclusive free gift with every order you place. Ready to explore our collection and find your perfect gifts? Browse our selection of premium department store items, place your order, and look forward to the excitement of your free gift arriving alongside your purchase.Shipping Policy
We will work hard to deliver items to you after receiving your orders and make sure they arrive safely. Delivery details will be provided in your confirmation email.In most cases, orders are processed within 2 days.Under special circumstances, it will be delayed as follows: When you place an order on Saturday, Sunday or public holidays, it will be delayed for 2 days..Normally, it needs 5-7 working days (Monday to Friday) without being affected by flight delay or other environmental factors..Because our shipping service is worldwide so the delivery times will depend on your location so it may need a few times and please wait patiently if you are in remote districts or countries.1. Return & Exchange Policy
We only accept items purchased from roymall.com. If you purchase from our local distributors or other retailers, you cannot return them on our side. Final sales items or free gifts are not acceptable for a return. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.After receiving return instructions from us, please package up your returned items and drop your package at the local post office or another courier.We will process your return or exchange item within 3-5 working days after we receive it. The refund will be processed and credited automatically to your original method of payment.No returns or exchanges can be accepted if the product was custom produced, including custom size, custom color, or custom printed.Need more help, please contact us. service@roymall.com or Whatsapp: +447549870296
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You'll get a full refund or 100% store credit after we receive the returned package and check it. The refund will be processed and credited automatically to your original method of payment. Please note that shipping costs and any duties or fees are not refundable. The extra shipping costs are non-refundable once the package has been shipped. You are responsible for paying these fees and we’re unable to waive or refund them, even if the order is returned back to us.Once we received and confirmed your returned item, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you have any problems regarding the refund process, please contact us. service@roymall.com or Whatsapp: +447549870296Description:
Looking for a unique combination of science, engineering, and style? The u03b3-Type Stirling Engine Generator is just what you need! Not only does it showcase the fascinating mechanics of a thermal Stirling engine, but it also features stunning LED lighting for an extra touch of elegance.
Specification:
Name:u03b3-Type Stirling Engine Model
Model Number:LL-015
Material:Aluminum
Color:Red/Blue(Optional)
Product Form:Pre-assembled Version (Finished)
Motor Output:2.5-4V / 0.3-0.8A (Non-stable)
Three Lighting Effects:LED Bulb Effect / LED Color Flashing Bulbs / Colorful LED String Lights
Start Method:Manual Start
Product Weight:550g
Package Weight:600g
Product Dimensions:16 x 8 x 10cm
Package Dimensions:17.5 x 9.5 x 11.5cm
Ages:16+
Features:
- Superior Craftsmanship: Crafted from premium quality aluminum with precision CNC machining and a mirror-like electroplated finish, showcasing detailed craftsmanship and a luxurious scientific design.
- Powerful & Reliable Performance:Delivers up to 4V/0.8A output with a enduring quartz glass heating tube that runs continuously for 30 minutes without performance loss, perfect for hobbyists and collectors.
- Versatile Lighting Effects:Features a combination of LED bulb (warm white), colorful flashing lights, and soft string lights for a dynamic, easy-to-switch lighting display that adds visual appeal and atmosphere.
- Easy to Use:Fully assembled and tested, with an English manual for quick setup. Suitable for beginners, students, and children, making it a perfect gift option.
- omplete Package: Includes all necessary accessories like an alcohol lamp, dropper, glass tube, and LED lights, offering everything needed for a hassle-free experience in one purchase.
Package included:
1 x Stirling Engine
1 x Alcohol Lamp
1 x Alcohol Dropper
1 x Spare Glass Tube
1 x LED Bulb
1 x Colorful LED String Lights
1 x Colorful LED Bulbs
1 x English Manual
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