what is the warranty for and how long is it?

I don’t think there is a warranty for it. However, if it’s defective call the company. They seem to be really good at doing the right thing

Can you confirm the voltage rating of the power cord? only 110v or up to 240v? thank you.

The power supply will work with 100-240v. It has a US plug.

Mine didn't come with an instruction booklet. Where can i find one online or request one?

Contact Amazon or the Seller about getting a booklet. As for online guidance, doing a quick google search on how to use a rock tumbler will help. You can also put your tumbler info into youtube and see someone setting it up and using it. A quick search of Amazon shows several books on rock tumbling as well as gemstone/rock identification.

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💎 Turn rough stones into polished gems—and your STEM game up a notch!

WHISPER QUIET OPERATION - Enjoy a powerful yet quiet motor with a leak-resistant barrel that won’t disrupt your workspace.
COMPLETE STEM EXPERIENCE - Includes everything from rough stones to jewelry fasteners and a detailed guide—perfect for curious minds of all ages.
ENGAGING EDUCATIONAL GIFT - Foster a passion for geology and science with a hands-on project that’s as fun as it is informative.
PRECISION POLISHING TIMER - Set it and forget it with a 9-day auto shutoff digital timer for perfect results every time.
CUSTOMIZABLE TUMBLING SPEEDS - Three speed settings let you tailor the polish for every type of rock and desired finish.

The Advanced Professional Rock Tumbler Kit combines a powerful, quiet motor with a 9-day digital timer and 3-speed settings to transform rough rocks into stunning polished gems. This all-in-one STEM kit includes assorted stones, grit packets, and jewelry accessories, making it an ideal educational gift that inspires science learning and creativity for kids and adults alike.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Product Dimensions	33 x 23 x 14 cm; 2.72 kg
Manufacturer recommended age	8 years and up
Item model number	DD009
Educational Objective(s)	Earth sciences, hand-eye coordination, patience
Number of Game Players	1
Assembly Required	No
Batteries Required?	No
Batteries Included?	No
Material Type(s)	Rubber
Color	Rock Tumbler
ASIN	B07Q32W334

Advanced Professional Rock Tumbler Kit - with Digital 9-Day Polishing Timer & 3 Speed Settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Gift for Kids All Ages : Geology Toy

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