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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ADVANCED PROFESSIONAL ROCK TUMBLER KIT - 9 Day Digital Timer for Polishing & 3 Speed Settings - Transform Coarse Rocks into Beautiful Gemstones Perfect Science & STEM Gifts for Kids of All Ages: Geology Toys

Product ID: 744071285

Details

Size
‎33 x 23 x 14
Brand
Dan&Darci
Theme
Geology
Age Range (Description)
Adult
Item dimensions L x W x H
33 x 23 x 14

⏳9-day digital timer

🔇low noise, leak-proof barrel

⚙️3-speed polishing control

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€ 388.28

Duties & taxes included

In stock

Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Turn rough rocks into dazzling gems — polish your passion for science!

GIFT THAT INSPIRES - Ideal for kids and adults, turning science into a captivating hands-on adventure
SET FORGET TIMER - 9-day digital timer with auto shut-off for hassle-free tumbling
WHISPER QUIET OPERATION - Leak-proof, low noise barrel keeps your space peaceful
COMPLETE STEM EXPERIENCE - All-in-one kit with stones, sand, and educational guide to spark curiosity
PRECISION POLISHING CONTROL - 3 adjustable speeds for the perfect gem finish every time

The Advanced Professional Rock Tumbler Kit features a durable motor with 3-speed settings and a 9-day digital timer displayed on an LCD screen. Its leak-proof, low noise barrel holds up to 1 lb of stones, making it perfect for STEM education and hobbyists aged 8 and up. The complete kit includes coarse stones, sandstone packets, a mesh strainer, jewelry storage, and an illustrated guide to transform rough rocks into polished gemstones effortlessly.

Specifications

Model Number	DD009
Batteries Required?	No
Batteries Included	No
Material Type(s)	Metal
Target Gender	Unisex
Manufacturer recommended age	8 years and up
Item model number	DD009
Product Dimensions	33 x 23 x 14 cm; 2.72 kg
ASIN	B07Q32W334

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