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 timer

🔇low-noise leak-resistant barrel

⚙️3-speed precision control

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Sold byAmazon SenegalDelivered 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 OPERATION - Enjoy a peaceful workspace with a leak-resistant, ultra-quiet barrel design.
COMPLETE STEM EXPERIENCE - All-in-one kit with rocks, grits, jewelry fasteners, and an illustrated guide to fuel curiosity.
SET IT FORGET IT TIMER - 9-day digital timer lets you multitask while your rocks transform into dazzling gems.
TIMELESS GIFT FOR ALL AGES - Perfect for professionals and kids alike—spark a lifelong passion for geology and science.
PRECISION POLISHING CONTROL - Customize your gem’s shine with 3-speed settings for flawless results every time.

The Dan&Darci Advanced Professional Rock Tumbler Kit is a powerful, quiet, and easy-to-use STEM tool featuring a 9-day digital timer and 3-speed settings. This complete kit includes assorted rough stones, multiple grit packets, and jewelry fasteners, making it ideal for all ages to explore geology and create beautiful polished gems with professional results.

Specifications

ASIN	B07Q32W334
Age Range Description	Kid, Adult
Best Sellers Rank	#33,435 in Toys & Games ( See Top 100 in Toys & Games ) #13 in Kids' Rock Tumblers
Brand Name	Dan&Darci
Customer Reviews	4.5 4.5 out of 5 stars (9,542)
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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