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

Product ID: 118232511

⏳9-day digital timer

🔇low-noise leak-resistant barrel

⚙️3-speed precision control

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VT28206

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

STEM MEETS STYLE - An engaging, educational kit that sparks curiosity and creativity for all ages—because science should never be boring.
WHISPER QUIET POWER - Heavy-duty motor with a leak-resistant barrel ensures smooth, silent operation—no distractions, just results.
SET IT AND FORGET IT - Advanced 9-day digital timer lets you focus on life while your gems get their glow-up.
TAILORED TUMBLING EXPERIENCE - Choose from 3 speed settings for perfectly customized polishing results every time.
MASTER THE ART OF GEM POLISHING - Transform rough stones into dazzling gems with professional-grade tumbling precision.

The Dan&Darci Advanced Professional Rock Tumbler Kit is a complete STEM-focused geology set featuring a powerful, quiet motor, a leak-resistant barrel, and a digital 9-day timer with 3 speed settings. Designed for all ages, it includes everything needed to polish rough stones into beautiful gems, making it an ideal educational gift that combines fun, science, and creativity.

Specifications

ASIN	B07Q32W334
Age Range Description	Kid, Adult
Best Sellers Rank	#41,309 in Toys & Games ( See Top 100 in Toys & Games ) #12 in Kids' Rock Tumblers
Brand Name	Dan&Darci
Customer Reviews	4.5 4.5 out of 5 stars (9,526)
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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