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

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

Product ID: 118232511

⏳9-day digital polishing timer

🔇low-noise, leak-resistant barrel

⚙️3 adjustable speed settings

€ 216.22

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Turn rough stones into polished perfection—because your desk deserves a little sparkle!

WHISPER QUIET POWER - Heavy-duty motor paired with a leak-resistant, low-noise barrel means no distractions—just pure rock transformation.
READY OUT OF THE BOX - No assembly needed—start tumbling and impress your friends with your own polished gems in days.
COMPLETE STEM EXPERIENCE - All-in-one kit with rocks, grit, jewelry fasteners, and an illustrated guide to fuel curiosity and hands-on learning.
TIMELESS EDUCATIONAL FUN - Perfect for all ages, this kit turns science into a captivating hobby that sparks a lifelong passion for geology.
PRECISION POLISHING CONTROL - Customize your gem’s shine with 3 speed settings and a digital timer for flawless results every time.

The Dan&Darci Advanced Professional Rock Tumbler Kit is a premium STEM toy designed for kids and adults alike. Featuring a powerful motor, a leak-resistant and quiet barrel, 3 speed settings, and a 9-day digital timer, it offers precise control over the rock polishing process. The complete kit includes assorted rough stones, grit packets, jewelry fasteners, a mesh strainer, and an easy-to-follow guide, making it an engaging educational tool that transforms rough rocks into beautiful gems with minimal effort.

Specifications

ASIN	B07Q32W334
Age Range Description	Kid, Adult
Best Sellers Rank	#34,463 in Toys & Games ( See Top 100 in Toys & Games ) #15 in Kids' Rock Tumblers
Brand Name	Dan&Darci
Customer Reviews	4.5 4.5 out of 5 stars (9,546)
Educational Objective	STEM
Included Components	Instruction Booklet + Learning Guide, Jewelry Fasteners, Mesh Strainer, Power Cord, Spare Motor Belt, Rock Tumbler, 0.5 lb Assorted Rough Stones,4 Grit Packets
Is Assembly Required	No
Item Dimensions	12.7 x 10 x 5.7 inches
Manufacturer	Dan&Darci
Manufacturer Maximum Age (MONTHS)	1296.0
Manufacturer Minimum Age (MONTHS)	96.0
Manufacturer Part Number	DD-007
Material Type	Metal
Model Number	Rock Tumbler
Size	23 cm x 33 cm x 14 cm
Theme	Geology
UPC	855831008158
Unit Count	1 Count

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€ 216.22

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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